| Acute elimia | Elimia acuta | Wherever found | UR | 4 |
| Alabama Cave crayfish | Cambarus jonesi | Wherever found | NL | 4 |
| Alabama hickorynut | Obovaria unicolor | Wherever found | UR | 4 |
| Alabama Map turtle | Graptemys pulchra | Wherever found | PSAT | 4 |
| Alabama rainbow | Villosa nebulosa | Wherever found | UR | 4 |
| Alabama shad | Alosa alabamae | Wherever found | UR | 4 |
| Alabama spike | Elliptio arca | Wherever found | UR | 4 |
| Alachua Light Fleeting Cave crayfish | Procambarus lucifugus ssp. alachua | Wherever found | NL | 4 |
| Alligator snapping turtle | Macrochelys temminckii | Wherever found | PT | 4 |
| Altamaha arc-mussel | Alasmidonta arcula | Wherever found | NL | 4 |
| Altamaha shiner | Cyprinella xaenura | Wherever found | NL | 4 |
| American alligator | Alligator mississippiensis | Wherever found | SAT | 4 |
| American bumble bee | Bombus pensylvanicus | - | UR | 3 |
| Amistad gambusia | Gambusia amistadensis | Wherever found | D3A | 2 |
| Ample elimia | Elimia ampla | Wherever found | NL | 4 |
| Angular Dwarf crayfish | Cambarellus lesliei | Wherever found | UR | 4 |
| Apalachicola king snake | Lampropeltis getula meansi | Wherever found | UR | 4 |
| Apalachicola wild indigo | Baptisia megacarpa | Wherever found | UR | 4 |
| Appalachian Bewick's wren | Thryomanes bewickii altus | Wherever found | SC | 5 |
| Arizona agave | Agave arizonica | - | DNS | 2 |
| Arizona striped whiptail | Aspidoscelis inornatus arizonae | Wherever found | NL | 2 |
| Arizona toad | Bufo microscaphus microscaphus | Wherever found | UR | 2 |
| Badwater snail | Assiminea infima | Wherever found | SC | 1 |
| Bahama swallowtail butterfly | Heraclides andraemon bonhotei | Wherever found | DA | 4 |
| Bankhead darter | Percina sipsi | Wherever found | UR | 4 |
| Barbour's map turtle | Graptemys barbouri | Wherever found | PSAT | 4 |
| Beautiful gilia | Aliciella formosa | Wherever found | UR | 2 |
| Beller's ground beetle | Agonum belleri | Wherever found | SC | 1 |
| Bethany Beach firefly | Photuris bethaniensis | - | UR | 5 |
| Big Bar hesperian | Vespericola pressleyi | Wherever found | UR | 8 |
| Bigcheek Cave crayfish | Procambarus delicatus | Wherever found | UR | 4 |
| Big red sage | Salvia penstemonoides | Wherever found | UR | 2 |
| Bisti Fleabane | Erigeron bistiensis | - | NL | 2 |
| Blackbarred crayfish | Cambarus unestami | Wherever found | NL | 4 |
| Blackbract pipewort | Eriocaulon nigrobracteatum | - | UR | 4 |
| Black-capped petrel | Pterodroma hasitata | Wherever found | PT | 4 |
| Black-knobbed map turtle | Graptemys nigrinoda | Wherever found | UR | 4 |
| Black mudalia | Elimia melanoides | Wherever found | UR | 4 |
| Black-spotted newt | Notophthalmus meridionalis | Wherever found | UR | 2 |
| Black toad | Bufo exsul | Wherever found | SC | 1 |
| Blanding's turtle | Emydoidea blandingii | Wherever found | UR | 3 |
| Blarina carolinensis ssp. shermani | Blarina brevicauda shermani | Wherever found | UR | 4 |
| Blue Calamintha Bee | Osmia calaminthae | Wherever found | UR | 4 |
| Bluehead shiner | Pteronotropis hubbsi | Wherever found | NL | 4 |
| Blueridge springfly | Remenus kirchneri | Wherever found | UR | 5 |
| Bluestripe darter | Percina cymatotaenia | Wherever found | UR | 3 |
| Bog spicebush | Lindera subcoriacea | Wherever found | UR | 4 |
| bog turtle | Glyptemys muhlenbergii | U.S.A. (GA, NC, SC, TN, VA) | SAT | 4 |
| Boykin's lobelia | Lobelia boykinii | Wherever found | UR | 4 |
| Braken Bat Cave meshweaver | Cicurina venii | Wherever found | DNS | 2 |
| Brawleys Fork crayfish | Cambarus williami | Wherever found | UR | 4 |
| Burrowing bog crayfish | Fallicambarus burrisi | Wherever found | NL | 4 |
| Bushy whitlow-wort | Paronychia congesta | Wherever found | UR | 2 |
| Bylas springsnail | Pyrgulopsis arizonae | Wherever found | UR | 2 |
| Caddo madtom | Noturus taylori | Wherever found | NL | 4 |
| Calcasieu crayfish | Orconectes blacki | Wherever found | UR | 4 |
| Calvert's emerald | Somatochlora calverti | Wherever found | UR | 4 |
| Caper elimia | Elimia olivula | Wherever found | NL | 4 |
| Caribbean coot | Fulicacaribaea | Puerto Rican | SC | 4 |
| Caribbean monk seal | Monachus tropicalis | Wherever found | D3A | 11 |
| Carolina birds-in-a-nest | Macbridea caroliniana | - | NL | 4 |
| Carolina hemlock | Tsuga caroliniana | Wherever found | UR | 4 |
| Carolina lead-plant | Amorpha georgiana confusa | Wherever found | UR | 4 |
| Cascade Caverns salamander | Eurycea latitans | Wherever found | UR | 2 |
| Cascades frog | Rana cascadae | Wherever found | UR | 1 |
| Cascade torrent salamander | Rhyacotriton cascadae | Wherever found | UR | 1 |
| Cedar Key mole skink | Plestiodon egregius insularis | Wherever found | UR | 4 |
| Chamberlain's Dwarf salamander | Eurycea chamberlaini | Wherever found | UR | 4 |
| Chattooga River crayfish | Cambarus scotti | Wherever found | NL | 4 |
| Chelan mountainsnail | Oreohelix sp | Wherever found | NL | 1 |
| Cherokee clubtail | Gomphus consanguis | Wherever found | UR | 4 |
| Chesapeake logperch | Percina bimaculata | Wherever found | UR | 5 |
| Chisoscoral-root | Hexalectris revoluta | Wherever found | UR | 2 |
| Ciliate-leaf tickseed | Coreopsis integrifolia | Wherever found | UR | 4 |
| Clear Lake Hitch | Lavinia exilicauda chi | Wherever found | UR | 8 |
| Clover's cactus | Sclerocactus cloverae | - | UR | 2 |
| Coal darter | Percina brevicauda | Wherever found | UR | 4 |
| Coastal cutthroat Trout | Oncorhynchus clarkiiclarkii | Umpqua R. | DR | 1 |
| Coastal Flatwoods crayfish | Procambarus apalachicolae | Wherever found | UR | 4 |
| Coastal LowlandCave crayfish | Procambarus leitheuseri | Wherever found | UR | 4 |
| Cobbleelimia | Elimia vanuxemiana | Wherever found | NL | 4 |
| Cockle elimia | Elimia cochliaris | Wherever found | UR | 4 |
| Coleman Cave beetle | Pseudanophthalmus colemanensis | Wherever found | UR | 4 |
| Columbia torrent salamander | Rhyacotriton kezeri | Wherever found | UR | 1 |
| Comal blind salamander | Eurycea tridentifera | Wherever found | NL | 2 |
| Comal Springs salamander | Eurycea species | Wherever found | NL | 2 |
| Compact elimia | Elimia showalteri | Wherever found | NL | 4 |
| Cooke's Peak woodlandsnail | Ashmunella macromphala | Wherever found | UR | 2 |
| Coosa creekshell | Villosa umbrans | Wherever found | UR | 4 |
| Corpulent hornsnail | Pleurocera corpulenta | Wherever found | UR | 4 |
| Correll's false dragon-head | Physostegia correllii | - | UR | 2 |
| Crested Riverlet crayfish | Hobbseus cristatus | Wherever found | UR | 4 |
| Crossroads cave beetle | Pseudanophthalmus intersectus | Wherever found | NL | 5 |
| Cudjo's cave beetle | Pseudanophthalmus hirsutus | Wherever found | NL | 5 |
| Culebra Skink | Spondylurus culebrae | Wherever found | UR | 4 |
| Cumberland Dusky salamander | Desmognathus abditus | Wherever found | UR | 4 |
| Cumberland moccasinshell | Medionidus conradicus | Wherever found | UR | 4 |
| Cuneate bidens | Bidens cuneata | Wherever found | DR | 1 |
| Curtiss' loosestrife | Lythrum curtissii | Wherever found | UR | 4 |
| Cypress crayfish | Cambarellus blacki | Wherever found | UR | 4 |
| Delaware County Cave Crayfish | Cambarus subterraneus | Wherever found | UR | 2 |
| Delicate spike | Elliptio arctata | Wherever found | UR | 4 |
| Denio sandhill skipper | Polites sabuleti sinemaculata | Wherever found | UR | 8 |
| Desert massasauga | Sistrurus catenatus ssp. edwardsii | Wherever found | NL | 2 |
| Desert tortoise | Gopherus agassizii | AZ south and east of Colorado | SAT | 8 |
| Dismal Swamp southeastern shrew | Sorex longirostris fisheri | Wherever found | DP | 5 |
| Domed ancylid | Rhodacme elatior | Wherever found | UR | 4 |
| Dona Ana talussnail | Sonorella todseni | Wherever found | UR | 2 |
| Dry Fork Valleycave beetle | Pseudanophthalmus montanus | Wherever found | UR | 5 |
| Dukes' skipper | Euphyes dukesi calhouni | Wherever found | UR | 4 |
| Dunes lizard | Sceloporus arenicolus | Wherever found | PE | 2 |
| Eared coneflower | Rudbeckia auriculata | Wherever found | UR | 4 |
| Eastern diamondback rattlesnake | Crotalus adamanteus | Wherever found | UR | 4 |
| Eastern spotted skunk | Spilogale putorius interrupta | Wherever found | UR | 3 |
| Edgewood blind harvestman | Calcina minor | Wherever found | SC | 1 |
| Edison's ascyrum | Hypericum edisonianum | Wherever found | UR | 4 |
| Edmund's snaketail | Ophiogomphus edmundo | Wherever found | UR | 4 |
| Edwards Aquifer diving beetle | Haideoporus texanus | Wherever found | UR | 2 |
| Egg-mimic darter | Etheostoma pseudovulatum | Wherever found | NL | 4 |
| Elegant elimia | Elimia teres | Wherever found | UR | 4 |
| Elongate-gland Springsnail | Pyrgulopsis isolata | Wherever found | UR | 8 |
| Endless Caverns cave beetle | Pseudanophthalmus avernus | Wherever found | NL | 5 |
| Engraved elimia | Elimia perstriata | Wherever found | UR | 4 |
| Escambia Map turtle | Graptemys ernsti | Wherever found | PSAT | 4 |
| false spike | Fusconaia mitchelli | Wherever found | PE | 2 |
| Ferris's copper | Lycaena ferrisi | Wherever found | UR | 2 |
| Fish Creek fleabane | Erigeron piscaticus | Wherever found | UR | 2 |
| Fish Creek Springs tui chub | Siphateles bicoloreuchila | Wherever found | SC | 8 |
| Fish Lake Valley tui chub | Siphateles bicolor ssp. 4 | Fish Lake | UR | 8 |
| Flat-topped Steptoe pyrg | Pyrgulopsis planulata | Wherever found | UR | 8 |
| Florida cave amphipod | Crangonyx grandimanus | Wherever found | UR | 4 |
| Florida Cave crayfish | Procambarus lucifugus | Wherever found | UR | 4 |
| Florida Cave crayfish | Procambarus lucifugus ssp. lucifugus | Wherever found | UR | 4 |
| Florida hartwrightia | Hartwrightia floridana | Wherever found | UR | 4 |
| Florida Keys mole skink | Plestiodon egregius egregius | Wherever found | PT | 4 |
| Florida loosestrife | Lythrum flagellare | Wherever found | UR | 4 |
| Florida pinesnake | Pituophis melanoleucus mugitus | Wherever found | UR | 4 |
| Florida pondweed | Potamogeton floridanus | Wherever found | UR | 4 |
| Florida Red-bellied turtle | Pseudemys nelsoni | Wherever found | UR | 4 |
| Florida scrub lizard | Sceloporus woodi | Wherever found | UR | 4 |
| Florida willow | Salix floridana | Wherever found | UR | 4 |
| Foothill yellow-legged frog | Rana boylii | North Feather Distinct Population | PT | 8 |
| Fredonia wild-buckwheat | Eriogonum mortonianum | Wherever found | UR | 2 |
| Georgia lead-plant | Amorpha georgiana georgiana | Wherever found | UR | 4 |
| Ghost orchid | Dendrophylax lindenii | - | UR | 4 |
| Gila mayfly | Lachlania dencyanna | Wherever found | UR | 2 |
| Gila Tryonia snail | Tryonia gilae | Wherever found | UR | 2 |
| Globose dune beetle | Coelus globosus | Wherever found | SC | 1 |
| Godfry’s stitchwort | Minuartia godfreyi | Wherever found | UR | 4 |
| Golden-winged warbler | Vermivora chrysoptera | Wherever found | UR | 3 |
| Gopher Frog | Lithobates capito | Wherever found | UR | 4 |
| Grand Canyon cave pseudoscorpion | Archeolarca cavicola | Wherever found | UR | 2 |
| Grand Wash springsnail | Pyrgulopsis bacchus | Wherever found | UR | 2 |
| Gray wolf | Canis lupus | Northern Rocky Mountain DPS | UR | 6 |
| Greater sage-grouse | Centrocercus urophasianus | Bi-State | PT | 8 |
| Greater Saint Croix Skink | Spondylurus magnacruzae | Wherever found | UR | 4 |
| Greater Virgin Islands Skink | Spondylurus spilonotus | Wherever found | UR | 4 |
| Greenbrier Cave crayfish | Cambarus nerterius | Wherever found | UR | 5 |
| Green floater | Lasmigona subviridis | Wherever found | PT | 5 |
| Grizzly bear | Ursus arctoshorribilis | Greater Yellowstone Ecosystem | UR | 6 |
| Guadalupe Mountain necklacepod | Sophora gypsophila | - | NL | 2 |
| Guam broadbill | Myiagra freycineti | Wherever found | D3A | 1 |
| Gulf Coast solitarybee | Hesperapis oraria | - | NL | 4 |
| Gulf Hammock dwarf siren | Pseudobranchus striatuslustricolus | Wherever found | UR | 4 |
| Gulf Sweet pitcherplant | Sarracenia rubra ssp. gulfensis | Wherever found | UR | 4 |
| Halloween darter | Percina crypta | Halloween | UR | 4 |
| Hardin crayfish | Orconectes wrighti | Wherever found | UR | 4 |
| Harper's fimbristylis | Fimbristylis perpusilla | Wherever found | UR | 4 |
| Harper's heartleaf | Hexastylis speciosa | Wherever found | UR | 4 |
| Hatchie Burrowing crayfish | Fallicambarus hortoni | Wherever found | NL | 4 |
| Hellbender | Cryptobranchus alleganiensis | Wherever found | UR | 3 |
| Heller Cave springtail | Typhlogastrura helleri | Wherever found | UR | 5 |
| Helmet rocksnail | Lithasia duttoniana | Wherever found | NL | 4 |
| Henne's eucosman moth | Eucosma hennei | Wherever found | SC | 1 |
| Henry's spider-lily | Hymenocallis henryae | Wherever found | UR | 4 |
| Hobb's cave amphipod | Crangonyx hobbsi | Wherever found | UR | 4 |
| Hoko vertigo | Vertigo sp | Wherever found | NL | 1 |
| Hot Creek Valley tui chub | Siphateles bicolorssp. 5 | Wherever found | SC | 8 |
| Huachuca Woodland snail | Ashmunella levettei | Wherever found | UR | 2 |
| Hualapai Mexican vole | Microtus mexicanus hualpaiensis | Wherever found | DNS | 2 |
| Hubbard's cave beetle | Pseudanophthalmus hubbardi | Wherever found | UR | 5 |
| Hubricht's cave beetle | Pseudanophthalmus hubrichti | Wherever found | UR | 5 |
| Idaho springsnail | Pyrgulopsis idahoensis | Wherever found | DR | 1 |
| Inflated floater | Pyganodon gibbosa | Wherever found | NL | 4 |
| Insular hispid Cotton rat | Sigmodon hispidus insulicola | Wherever found | UR | 4 |
| Inyo rock daisy | Perityle inyoensis | Wherever found | UR | 1 |
| Jackson Prairie crayfish | Procambarus barbiger | Wherever found | UR | 4 |
| Jefferson County crayfish | Fallicambarus gilpini | Wherever found | NL | 4 |
| Joshua Tree | Yucca brevifolia | - | UR | 8 |
| Kaibab bladderpod | Lesquerella kaibabensis | - | NL | 2 |
| Kanab ambersnail | Oxyloma haydeni kanabensis | Wherever found | DNS | 6 |
| Karst pond xyris | Xyris longisepala | Wherever found | UR | 4 |
| Karst snowfly | Allocapnia cunninghami | Wherever found | UR | 4 |
| Kay Gramma | Bouteloua kayi | - | NL | 2 |
| Kentucky creekshell | Villosa ortmanni | Wherever found | UR | 4 |
| Key ring-necked snake | Diadophis punctatus acricus | Wherever found | PE | 4 |
| Key striped mud turtle | Kinosternon bauri | Wherever found | NL | 4 |
| Kiamichi Crayfish | Orconectes saxatilis | Wherever found | UR | 2 |
| Kingman springsnail | Pyrgulopsis conica | Wherever found | UR | 2 |
| Kisatchie painted crayfish | Faxonius maletae | Wherever found | UR | 2 |
| Lagniappe crayfish | Procambarus lagniappe | Wherever found | NL | 4 |
| Lake sturgeon | Acipenser fulvescens | Wherever found | UR | 3 |
| Landyes pyrg | Pyrgulopsis landyei | Wherever found | UR | 8 |
| Large-flowered Barbara's buttons | Marshallia grandiflora | Wherever found | UR | 5 |
| Lassics lupine | Lupinus constancei | - | PE | 8 |
| Las Vegas bearpoppy | Arctomecon californica | - | UR | 8 |
| Least crayfish | Cambarellus diminutus | Wherever found | NL | 4 |
| Leoncita false-foxglove | Agalinis calycina | Wherever found | UR | 2 |
| Lesser prairie-chicken | Tympanuchus pallidicinctus | Wherever found | UR | 2 |
| Lesser Saint Croix Skink | Capitellum parvicruzae | Wherever found | UR | 4 |
| Lesser Virgin Islands Skink | Spondylurus semitaeniatus | Wherever found | UR | 4 |
| Lily Shoals elimia | Elimia annettae | Wherever found | UR | 4 |
| Limestone salamander | Hydromantes brunus | Wherever found | UR | 1 |
| Linda's Roadside-skipper | Amblyscirtes linda | Wherever found | UR | 4 |
| Little Kennedy cave beetle | Pseudanophthalmus cordicollis | Wherever found | UR | 5 |
| Little oecetis longhorn caddisfly | Oecetis parva | Wherever found | UR | 4 |
| Little River crayfish | Cambarus spicatus | Wherever found | UR | 4 |
| Lloyd's hedgehog cactus | Echinocereus lloydii | - | DNS | 2 |
| Lobed roachfly | Tallaperla lobata | Wherever found | UR | 5 |
| Logan's Agarodes caddisfly | Agarodes logani | Wherever found | UR | 4 |
| Longnose darter | Percina nasuta | Wherever found | UR | 4 |
| Long Valley speckled dace | Rhinichthys osculusssp. | Long Valley | UR | 1 |
| Louisiana Pigtoe | Pleurobema riddellii | Wherever found | PT | 2 |
| Maiden Spring cave beetle | Pseudanophthalmus virginicus | Wherever found | NL | 5 |
| Manitou cavesnail | Antrorbis breweri | Wherever found | UR | 4 |
| Marble Canyon Spurge | Euphorbia aaronrossii | - | NL | 2 |
| Margarita River skimmer | Macromia margarita | Wherever found | UR | 4 |
| Mariana mallard | Anas oustaleti | Wherever found | D3A | 1 |
| Mathis spiderling | Boerhavia mathisiana | Wherever found | SC | 2 |
| Mckittrick pennyroyal | Hedeoma apiculatum | Wherever found | DP | 2 |
| Meadow joint-vetch | Aeschynomene pratensis | Wherever found | UR | 4 |
| Mexican duck | Anas diazi | U.S.A. only | DR | 2 |
| Mexican fawnsfoot | Truncilla cognata | Wherever found | PE | 2 |
| Miami Cave crayfish | Procambarus milleri | Wherever found | UR | 4 |
| Mimic cavesnail | Phreatodrobia imitata | Wherever found | UR | 2 |
| Mimic crayfish | Distocambarus carlsoni | Wherever found | UR | 4 |
| Mineral Creek mountainsnail | Oreohelix pilsbryi | Wherever found | UR | 2 |
| Mississippi flatwoods crayfish | Procambarus cometes | Wherever found | NL | 4 |
| Mojave poppy bee | Perdita meconis | - | UR | 8 |
| Mona Skink | Spondylurus monae | Wherever found | UR | 4 |
| Mono Lake brine shrimp | Artemia monica | Wherever found | SC | 1 |
| Morro Bay Polyphyllan Scarab Beetle | Polyphylla morroensis | - | UR | 8 |
| Morse's Little Plain Brown sedge | Lepidostoma morsei | Wherever found | NL | 4 |
| Mountain Purple pitcherplant | Sarracenia purpureavar. montana | Wherever found | UR | 4 |
| Mud elimia | Elimia alabamensis | Wherever found | NL | 4 |
| Narrows cave beetle | Pseudanophthalmus egberti | Wherever found | NL | 5 |
| Natural Bridge cave beetle | Pseudanophthalmus pontis | Wherever found | NL | 5 |
| Navasota False Foxglove | Agalinis navasotensis | Wherever found | PE | 2 |
| Needleleaf waternymph | Najas filifolia | Wherever found | UR | 4 |
| Neritiform Steptoe Ranch pyrg | Pyrgulopsis neritella | Wherever found | UR | 8 |
| New River riffle crayfish | Cambarus chasmodactylus | Wherever found | NL | 5 |
| No common name | lesquerella navajoensis | Wherever found | UR | 2 |
| No common name | Agave murpheyi | Wherever found | SC | 2 |
| No common name | Riccia californica | - | NL | 2 |
| No common name | ursia furtiva | Wherever found | UR | 2 |
| No common name | Gahnia lanaiensis | Wherever found | DR | 1 |
| No common name | Caecidotea cannula | Wherever found | UR | 5 |
| No common name | Adiantum vivesii | Wherever found | DNS | 4 |
| northern bog lemming | Synaptomys borealis | - | UR | 7 |
| Northern cavefish | Amblyopsis spelaea | Wherever found | UR | 4 |
| Northern Red-bellied cooter | Pseudemys rubriventris | Wherever found | NL | 5 |
| Northern Steptoe pyrg | Pyrgulopsis serrata | Wherever found | UR | 8 |
| Nudulose Coosa river snail | Elimia lachryma | Wherever found | UR | 4 |
| Oblong rocksnail | Leptoxis compacta | Wherever found | UR | 4 |
| Ocmulgee marstonia | Marstonia agarhecta | Wherever found | NL | 4 |
| Ocmulgee skullcap | Scutellaria ocmulgee | Wherever found | PT | 4 |
| Oklahoma cave crayfish | Cambarus tartarus | Wherever found | UR | 2 |
| Oktibbeha rivulet crayfish | Hobbseus orconectoides | Wherever found | UR | 4 |
| O`opu alamo`o | Lentipes concolor | Wherever found | SC | 1 |
| Orangefin madtom | Noturus gilberti | Wherever found | UR | 5 |
| Orang eLake Cave crayfish | Procambarus franzi | Wherever found | UR | 4 |
| Oregon Vesper Sparrow | Pooecetes gramineus ssp. affinis | Wherever found | UR | 1 |
| Orlando Cave crayfish | Procambarus acherontis | Wherever found | UR | 4 |
| Overlooked cave beetle | Pseudanophthalmus praetermissus | Wherever found | UR | 5 |
| Ozark shiner | Notropis ozarcanus | Wherever found | UR | 4 |
| Pagan Mariana flying fox bat | Pteropus mariannus paganensis | Wherever found | SC | 1 |
| Palatka skipper | Euphyes pilatka klotsi | Wherever found | UR | 4 |
| Paleback darter | Etheostoma pallididorsum | Wherever found | NL | 4 |
| Pallid Cave crayfish | Procambarus pallidus | Wherever found | UR | 4 |
| Panhandle lily | Lilium iridollae | - | NL | 4 |
| Panhandle meadowbeauty | Rhexiasalicifolia | - | NL | 4 |
| Pearl River Map Turtle | Graptemys pearlensis | - | PT | 4 |
| Pecos pupfish | Cyprinodon pecosensis | Wherever found | UR | 2 |
| Pecos springsnail | Pyrgulopsis pecosensis | Wherever found | UR | 2 |
| Pedernales River Springs salamander | Eurycea species | Wherever found | UR | 2 |
| Penasco least chipmunk | Tamias minimusatristriatus | Wherever found | PE | 2 |
| Peninsula Coast Range shoulderband | Helminthoglypta nickliniana awania | Wherever found | SC | 1 |
| Peppered shiner | Notropis perpallidus | Wherever found | UR | 4 |
| Phoenix talussnail | Maricopella allynsmithi | Wherever found | UR | 2 |
| Piebald Madtom | Noturus gladiator | Wherever found | UR | 4 |
| Pinaleno talussnail | Sonorella grahamensis | Wherever found | UR | 2 |
| Pine Islandrice rat | Oryzomys palustris planirostris | Wherever found | NL | 4 |
| Pinos Altos fameflower | Talinum humile | Wherever found | SC | 2 |
| Pinyon Jay | Gymnorhinus cyanocephalus | Wherever found | UR | 6 |
| Plains bison | Bison bison bison | Wherever found | UR | 6 |
| Plateau spot-tailed earless lizard | Holbrookia lacerata | Wherever found | UR | 2 |
| Ponderous siltsnail | Cincinnatia ponderosa | Wherever found | UR | 4 |
| Popeye shiner | Notropis ariommus | Wherever found | NL | 4 |
| prairie chub | Macrhybopsis australis | Wherever found | UR | 2 |
| Prairie gray fox | Urocyon cinereoargenteus ssp. ocythous | Wherever found | UR | 3 |
| Prairie mole cricket | Gryllotalpa major | Wherever found | SC | 3 |
| Prairie moonwort | Botrychium gallicomontanum | Wherever found | SC | 3 |
| Princess elimia | Elimia bellacrenata | Wherever found | UR | 4 |
| Puerto Rican Skink | Spondylurus nitidus | Wherever found | UR | 4 |
| Purpleskimmer | Libellula jesseana | Wherever found | UR | 4 |
| Purple-spined Hedgehog cactus | Echinocereus engelmannii var. purpureus | - | DR | 6 |
| Putnam County Cave crayfish | Procambarus morrisi | Wherever found | UR | 4 |
| Pygmy siltsnail | Cincinnatia parva | Wherever found | UR | 4 |
| Quitobaquito tryonia | Tryonia quitobaquitae | Wherever found | UR | 2 |
| Rare skipper | Problema bulenta | Wherever found | NL | 5 |
| Raven's seedbox | Ludwigia ravenii | Wherever found | UR | 4 |
| Ravine sedge | Carex impressinervia | Wherever found | UR | 4 |
| Rayed creekshell | Anodontoides radiatus | Wherever found | NL | 4 |
| Redrock stonefly | Anacroneuria wipukupa | Wherever found | UR | 2 |
| Regal fritillary | Speyeria idalia | Wherever found | UR | 6 |
| Relict dace | Relictus solitarius | Wherever found | UR | 8 |
| Reverse pepplesnail | Somatogyrus alcoviensis | Wherever found | UR | 4 |
| Rich Mt. slitmouth | Stenotrema pilsbryi | Wherever found | SC | 4 |
| rim rock crowned snake | Tantilla oolitica | Wherever found | PE | 4 |
| Rio Grande chub | Gila pandora | Wherever found | UR | 2 |
| Rio Grande shiner | Notropis jemezanus | Wherever found | UR | 2 |
| Rio Grande Sucker | Catostomus plebeius | Wherever found | UR | 2 |
| Robust redhorse | Moxostoma robustum | Wherever found | UR | 4 |
| Rockcastle aster | Eurybia saxicastellii | - | NL | 4 |
| Rocky shiner | Notropis suttkusi | Wherever found | UR | 4 |
| Roughhead shiner | Notropis semperasper | Wherever found | UR | 5 |
| rough-stemmed aster | Symphyotrichum puniceum var. scabricaule | - | NL | 2 |
| Round-rib elimia | Elimia nassula | Wherever found | UR | 4 |
| Ruddy Duck | Oxyura jamaicensis jamaicensis | Puerto Rico | SC | 4 |
| Sabino Canyon damselfly | Argia sabino | Sabino Canyon | UR | 2 |
| Sacramento anthicid | Anthicus sacramento | Wherever found | SC | 1 |
| Saddled madtom | Noturus fasciatus | saddled | NL | 4 |
| Saint Paul cave beetle | Pseudanophthalmus sanctipauli | Wherever found | NL | 5 |
| Saiya | Amoreuxia gonzalezii | Wherever found | UR | 2 |
| salina mucket | Potamilus metnecktayi | Wherever found | PE | 2 |
| Saltmarsh topminnow | Fundulus jenkinsi | Wherever found | NL | 4 |
| Saltmarsh vagrant shrew | Sorexvagrans halicoetes | Wherever found | SC | 1 |
| Saluda crayfish | Distocambarus youngineri | Wherever found | UR | 4 |
| San Clemente Island coenonycha beetle | Coenonycha clementina | Wherever found | SC | 1 |
| San Clemente islandsnail | Micrarionta gabbii | Wherever found | SC | 1 |
| Sangrede Cristo peaclam | Pisidium sanguinichristi | Wherever found | UR | 2 |
| Sanibel Island rice rat | Oryzomys palustris sanibeli | Wherever found | UR | 4 |
| San Joaquin Valley giant flower-loving fly | Rhaphiomidas trochilus | Wherever found | UR | 1 |
| San Nicolas island snail | Micrarionta feralis | Wherever found | SC | 1 |
| Santa Ana speckled dace | Rhinichthys osculus ssp. | Santa Ana | UR | 1 |
| Santa Barbara shelled slug | Binneya notabilis | Wherever found | SC | 1 |
| Santa Catalina ornate shrew | Sorexornatus willetti | Wherever found | SC | 1 |
| Santa Fe Cave crayfish | Procambarus erythrops | Wherever found | UR | 4 |
| San Xavier talussnail | Sonorella eremita | Wherever found | UR | 2 |
| Schoolhouse Springsleuctran stonefly | Leuctra szczytkoi | Wherever found | UR | 4 |
| Seepage salamander | Desmognathus aeneus | Wherever found | NL | 4 |
| Septima's clubtail | Gomphus septima | Wherever found | UR | 5 |
| Sevier snowfly | Allocapnia brooksi | Wherever found | UR | 4 |
| Shasta chaparral | Trilobopsis roperi | Wherever found | UR | 8 |
| Shasta hesperian | Vespericola shasta | Wherever found | UR | 8 |
| Shasta sideband | Monadenia troglodytes troglodytes | Wherever found | UR | 8 |
| Shasta snow-wreath | Neviusia cliftonii | - | UR | 8 |
| Shawnee darter | Etheostoma tecumsehi | Wherever found | UR | 4 |
| Shelta Cave crayfish | Orconectes sheltae | Wherever found | UR | 4 |
| Shenandoah cave beetle | Pseudanophthalmus limicola | Wherever found | UR | 5 |
| Sherman's fox squirrel | Sciurus niger shermani | Wherever found | SC | 4 |
| Shortspire hornsnail | Pleurocera curta | Wherever found | NL | 4 |
| Short-tailed snake | Stilosoma extenuatum | Wherever found | UR | 4 |
| Sicklefin chub | Macrhybopsis meeki | Wherever found | UR | 6 |
| Sicklefin redhorse | Moxostoma sp. | Wherever found | NL | 4 |
| Silken cave beetle | Pseudanophthalmus sericus | Wherever found | UR | 5 |
| Silver Glen Springs crayfish | Procambarus attiguus | Wherever found | UR | 4 |
| Silverspot | Speyeria nokomisnokomis | Wherever found | PT | 6 |
| Siuslaw hairy-necked tiger beetle | Cicindela hirticollis siuslawensis | - | UR | 1 |
| Slenderwrist burrowing crayfish | Fallicambarus petilicarpus | Wherever found | UR | 4 |
| Small-headed pipewort | Eriocaulon kornickianum | Wherever found | UR | 4 |
| Smallscale darter | Etheostoma microlepidum | Wherever found | UR | 4 |
| Smokies needlefly | Megaleuctra williamsae | Wherever found | UR | 4 |
| Smooth barked St. John’s wort | Hypericum lissophloeus | Wherever found | UR | 4 |
| Smooth catseye | Cryptantha semiglabra | Wherever found | UR | 2 |
| Song Sparrow | Melospiza melodiamaxillaris | Wherever found | SC | 1 |
| Sonoran talussnail | Sonorella magdalenensis | Wherever found | UR | 2 |
| South Branch Valley cave beetle | Pseudanophthalmus potomaca potomaca | Wherever found | NL | 5 |
| Southern elktoe | Alasmidonta triangulata | Wherever found | PE | 4 |
| Southern Purple Lilliput | Toxolasma corvunculus | Wherever found | UR | 2 |
| Southern snaketail | Ophiogomphus australis | Wherever found | UR | 4 |
| Southern Steptoe pyrg | Pyrgulopsis sulcata | Wherever found | UR | 8 |
| Speckled burrowing crayfish | Fallicambarus danielae | Wherever found | UR | 4 |
| Spider Cave crayfish | Troglocambarus maclanei | Wherever found | UR | 4 |
| Spiderelimia | Elimiaarachnoidea | Wherever found | UR | 5 |
| Spiny riversnail | Io fluvialis | Wherever found | UR | 4 |
| Spiny Scale crayfish | Cambarus jezerinaci | Wherever found | UR | 5 |
| Spinytail crayfish | Procambarus fitzpatricki | Wherever found | UR | 4 |
| Spotted rocksnail | Leptoxis picta | Wherever found | UR | 4 |
| Steelhead (Rainbow Trout) | Oncorhynchus (=Salmo) mykiss | Klamath Mountains Province | UR | 11 |
| Sterile Basin pyrg | Pyrgulopsis sterilis | Wherever found | UR | 8 |
| Streamside Salamander | Ambystoma barbouri | Wherever found | UR | 3 |
| Striated darter | Etheostoma striatulum | Wherever found | UR | 4 |
| Sturgeon chub | Macrhybopsis gelida | Wherever found | UR | 6 |
| Sub-globose Steptoe Ranch pyrg | Pyrgulopsis orbiculata | Wherever found | UR | 8 |
| Suckley's Bumble Bee | Bombus suckleyi | - | UR | 7 |
| Suisun ornate shrew | Sorexornatus sinuosus | Wherever found | SC | 1 |
| Sunfacing coneflower | Rudbeckia heliopsidis | Wherever found | UR | 4 |
| swale paintbrush | Castilleja ornata | Wherever found | PE | 2 |
| Sykora's Hydroptila caddisfly | Hydroptila sykorai | Wherever found | UR | 4 |
| Taiwanese humpback dolphin | Sousachinensis taiwanensis | - | PE | 11 |
| Tallapoosa orb | Quadrula asperatassp. archeri | Wherever found | UR | 4 |
| Tall western penstemon | Penstemon hesperius | - | UR | 1 |
| Tamaulipan spot-tailed earless lizard | Holbrookia subcaudalis | Wherever found | UR | 2 |
| Tecopa pupfish | Cyprinodon nevadensis calidae | Wherever found | D3A | 8 |
| Temblor legless lizard | Anniella alexanderae | - | UR | 8 |
| Tennessee cave salamander | Gyrinophilus palleucus | Wherever found | UR | 4 |
| Tennessee clubshell | Pleurobema oviforme | Wherever found | UR | 4 |
| Tennessee clubtail | Gomphus sandrius | Wherever found | UR | 4 |
| Tennessee forestfly | Amphinemura mockfordi | Wherever found | UR | 4 |
| Tennessee pigtoe | Pleuronaia barnesiana | Wherever found | UR | 4 |
| Tennessee pondweed | Potamogeton tennesseensis | Wherever found | UR | 5 |
| Texas fatmucket | Lampsilis bracteata | Wherever found | PE | 2 |
| Texas fawnsfoot | Truncilla macrodon | Wherever found | PT | 2 |
| Texas greasebush | Glossopetalon texense | - | NL | 2 |
| Texas heelsplitter | Potamilus amphichaenus | Wherever found | PE | 2 |
| Texas kangaroo rat | Dipodomys elator | Wherever found | PE | 2 |
| Texas pimpleback | Cyclonaias petrina | Wherever found | PE | 2 |
| Texas salamander | Eurycea neotenes | Wherever found | UR | 2 |
| Texas screwstem | Bartonia texana | - | UR | 2 |
| Texas trillium | Trillium pusillum texanum | - | UR | 2 |
| Texas Troglobitic Water Slater | Lirceolus smithii | Wherever found | UR | 2 |
| Tharp blue-star | Amsonia tharpii | Wherever found | UR | 2 |
| thick-leaf bladderpod | Physaria pachyphylla | - | UR | 6 |
| Thin-wall quillwort | Isoetes microvela | Wherever found | UR | 4 |
| Thomas' cave beetle | Pseudanophthalmus thomasi | Wherever found | NL | 5 |
| Threecorner milkvetch | Astragalus geyeri triquetrus | Wherever found | UR | 1 |
| Three-tooth long-horned caddisfly | Triaenodes tridontus | Wherever found | UR | 4 |
| Tombigbee Riverlet crayfish | Hobbseus petilus | Wherever found | UR | 4 |
| Toothless blindcat | Trogloglanis pattersoni | Wherever found | PE | 2 |
| Trianglelobe moonwort | Botrychium ascendens | Wherever found | SC | 1 |
| Tricolored bat | Perimyotis subflavus | Wherever found | PE | 5 |
| Truckee Barberry | Berberis (=Mahonia) sonnei | - | DR | 8 |
| Tumamoc globeberry | Tumamoca macdougalii | Wherever found | DP | 2 |
| Tuscumbia darter | Etheostoma tuscumbia | Wherever found | UR | 4 |
| [Unnamed] bush-pea | Genistidium dumosum | Wherever found | UR | 2 |
| Utah valvata snail | Valvata utahensis | Wherever found | DP | 1 |
| Variable Cuckoo Bumble Bee | Bombus variabilis | - | UR | 3 |
| Virginia stone | Acroneuria kosztarabi | Wherever found | UR | 5 |
| Virgin Islands Bronze Skink | Spondylurus sloanii | Wherever found | UR | 4 |
| Virgin Islands screech owl | Otusnudipes newtoni | Wherever found | SC | 4 |
| Waccamaw killifish | Fundulus waccamensis | Wherever found | SC | 4 |
| Warner Valley redband trout | Oncorhynchus mykiss ssp. | Wherever found | SC | 1 |
| Water stitchwort | Stellaria fontinalis | - | NL | 4 |
| Western Bumble bee | Bombusoccidentalis | Wherever found | UR | 6 |
| Western Chicken turtle | Deirochelys reticularia ssp. miaria | Wherever found | UR | 2 |
| western ridged mussel | Gonidea angulata | - | UR | 1 |
| Westfall's clubtail | Gomphus westfalli | Wherever found | UR | 4 |
| West Indian whistling duck | Dendrocygna arborea | Puerto Rico | SC | 4 |
| West's flax | Linum westii | Wherever found | UR | 4 |
| West Virginia spring salamander | Gyrinophilus subterraneus | Wherever found | UR | 5 |
| Wherry's Sweet pitcher-plant | Sarracenia rubra ssp. wherryi | Wherever found | UR | 4 |
| White liptooth | Polygyra peregrina | Wherever found | SC | 4 |
| White meadowbeauty | Rhexia parviflora | Wherever found | UR | 4 |
| White Sands pupfish | Cyprinodon tularosa | Wherever found | UR | 2 |
| Widemouth blindcat | Satan eurystomus | Wherever found | PE | 2 |
| Wintu sideband | Monadenia troglodytes ssp. wintu | Wherever found | UR | 8 |
| Wireleaf dropseed | Sporobolus teretifolius | Wherever found | UR | 4 |
| Yadkin River Goldenrod | Solidago plumosa | - | NL | 4 |
| Yalobusha Riverlet crayfish | Hobbseus yalobushensis | Wherever found | UR | 4 |
| Yavapai Arizona cotton rat | Sigmodon arizonae jacksoni | Wherever found | SC | 2 |
| Yazoo crayfish | Orconectes hartfieldi | Wherever found | UR | 4 |
| Yellow cedar | Callitropsis nootkatensis | - | NL | 7 |
| Yellow-sided clubtail | Stylurus potulentus | Wherever found | UR | 4 |
| Yuman desert fringe-toed lizard | Uma rufopunctata | Wherever found | UR | 2 |
| [unnamed] brush-pea | Genistidium dumosum | TX, Mexico | 12M/PLPCH | R2 |
| Aiea* | Nothocestrum latifolium | HI | PCH | R1 |
| ʻĀkia* | Wikstroemia skottsbergiana | HI | PCH | R1 |
| Alabama hickorynut* | Obovaria unicolor | AL, LA, MS | 12M/PLPCH | R4 |
| Anauunau* | Lepidium orbiculare | HI | PCH | R1 |
| Anchialine pool shrimp* | Procaris hawaiana | HI | PCH | R1 |
| Antillean manatee | Trichechus manatus manatus | PR | PCH | R4 |
| Anunu* | Sicyos lanceoloideus | HI | PCH | R1 |
| Anunu* | Sicyos macrophyllus | HI | PCH | R1 |
| Apalachicola common kingsnake | Lampropeltis getulameansi | FL | 12M/PLPCH | R4 |
| Aplokating-palaoan* | Psychotria malaspinae | CNMI, Guam | PCH | R1 |
| Appalachian grizzled skipper | Pyrgus wyandot | DC, MD, MI, NC, NJ, NY, OH, PA, VA, WV | 12M/PLPCH | R5 |
| Arkansas mudalia | Leptoxis arkansensis | AR, MO | Discretionary/PLPCH | R4 |
| Aztec gilia | Aliciella formosa | NM | 12M/PLPCH | R2 |
| Baker's Loulu* | Pritchardia bakeri | HI | PCH | R1 |
| band-rumped storm petrel* | Oceanodroma castro | HI | PCH | R1 |
| Barrens darter* | Etheostoma forbesi | TN | 12M/PLPCH | R4 |
| Berenghenas Halomtano* | Solanum guamense | Guam | PCH | R1 |
| Bethany Beach firefly* | Photuris bethaniensis | DE | 12M/PLPCH | R5 |
| bi-state sage grouse | Centrocercus urophasianus | CA, NV | FL | R8 |
| Black Creek crayfish | Procambarus pictus | FL | Discretionary/PLPCH | R4 |
| black-capped petrel* | Pterodroma hasitata | Hispaniola, NC, SC, GA, FL | FL | R4 |
| bleached sandhill skipper | Polites sabuleti sinemaculata | NV | Discretionary/PLPCH | R8 |
| bog turtle (southern population) | Glyptemys muhlenbergii | GA, NC, SC, TN, VA | 12M/PLPCH | R4 |
| Bridled darter* | Percina kusha | GA | 12M/PLPCH | R4 |
| cactus ferruginous pygmy-owl | Glaucidium brasilianum cactorum | AZ, TX | PCH | R2 |
| Canada lynx* | Lynx canadensis | CO, ID, ME, MI, MN, MT, NH, NM, UT, VT, WA, WI, WY | rPCH | R6 |
| Cannulate Cave isopod* | Caecidotea cannula | WV | 12M/PLPCH | R5 |
| Cascade torrent salamander | - | OR, WA | 12M/PLPCH | R1 |
| Cedar Key mole skink* | Plestiodon egregiusinsularis | FL | 12M/PLPCH | R4 |
| Chihuahua catfish | Ictalurus sp. | NM, TX | 12M/PLPCH | R2 |
| Clear Lake hitch* | Lavinia exilicauda chi | CA | 12M/PLPCH | R8 |
| Clover’s cactus | Sclerocactus cloverae | CO, NM | 12M/PLPCH | R2 |
| coal darter* | Percina brevicauda | AL | 12M/PLPCH | R4 |
| Columbia torrent salamander | - | OR, WA | 12M/PLPCH | R1 |
| Cook's Peak woodlandsnail | Ashmunella macromphaia | NM | 12M/PLPCH | R2 |
| Correll's false dragon- head | Physostegia correllii | LA, TX | 12M/PLPCH | R2 |
| Culebra skink* | Spondylurus culebrae | PR | 12M/PLPCH | R4 |
| domed ancylid | Rhodacmea elatior | AL, KY, TN | 12M/PLPCH | R4 |
| Dry Fork Valley cave beetle* | Pseudanophthalmus montanus | WV | 12M/PLPCH | R5 |
| eastern black rail* | Laterallus jamaicensis ssp. Jamaicensis | AL, CO, CT, DE, FL, GA, KS, LA, MA, MD, MS, NC, NJ, NY, OK, SC, TX, VA | PL | R4 |
| eastern hellbender* | Cryptobranchus alleganiensis alleganiensis | AL, AR, GA, IL, KY, MD, MS, NY, NC, OH, PA, TN, VA, WV | 12M/PLPCH | R3 |
| Edison's ascyrum* | Hypericum edisonianum | FL | 12M/PLPCH | R4 |
| elongate gland springsnail | Pyrgulopsis isolata | NV | 12M/PLPCH | R8 |
| Enaena* | Pseudognaphalium sandwicensium var. molokaiense | HI | PCH | R1 |
| Fadang* | Cycas micronesica | CNMI, Guam | PCH | R1 |
| Ferris's copper | Lycaena ferrisi | AZ | 12M/PLPCH | R2 |
| Fish Lake Valley tui chub* | Siphateles bicolorssp. 4 | NV | 12M/PLPCH | R8 |
| fisher (Northern California-Southern Oregon distinct population segment)* | Pekania pennanti | CA, OR | 12M/PLPCH | R1 |
| Florida bonneted bat* | Eumops floridanus | FL | fCH | R4 |
| Florida manatee* | Trichechus manatus latirostris | FL | rPCH | R4 |
| Florida pine snake | Pituophis melanoleucus mugitus | AL, FL, GA, SC | 12M/PLPCH | R4 |
| fragile tree snail* | Samoana fragilis | CNMI, Guam | PCH | R1 |
| frosted elfin butterfly | Callophrys irus | AL, AR, CT, DC, DE, FL, GA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV, Canada (Ontario) | Discretionary/PLPCH | R5 |
| ghost orchid* | Dendrophylax lindenii | FL, Cuba | 12M/PLPCH | R4 |
| Gila tryonia | Tryonia gilae | AZ | 12M/PLPCH | R2 |
| Godfry's stitchwort | Minuartia godfreyi | AL, FL, NC, SC, TN | 12M/PLPCH | R4 |
| Goodding's onion | Allium gooddingii | AZ, NM, UT | Discretionary/PLPCH | R2 |
| gray wolf (western populations)* | Canis lupus | AZ, CA, CO, ID, MT, NV, OR, UT, WY, WA | 12M | R6 |
| Gray-headed chickadee | Poecile cintus lathami | AK, Canada: Yukon and Northwest Territories | Discretionary/PLPCH | R7 |
| greater Saint Croix skink* | Spondylurus magnacruzae | USVI | 12M/PLPCH | R4 |
| greater Virgin Islands skink* | Spondylurus spilonotus | USVI | 12M/PLPCH | R4 |
| Guam tree snail* | Partula radiolata | Guam | PCH | R1 |
| Haiwale* | Cyrtandra hematos | HI | PCH | R1 |
| Heau* | Exocarpos menziesii | HI | PCH | R1 |
| Heller's cave springtail | Typhlogastrura helleri | PA | 12M/PLPCH | R5 |
| Hickory Nut Gorge green salamander | Aneides caryaensis | NC | 12M/PLPCH | R4 |
| hoary bat (North American) | Lasiurus cinereus cinereus | AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY; Canada; Mexico | Discretionary/PLPCH | R3 |
| Hohiu* | Dryopteris glabra var. pusilla | HI | PCH | R1 |
| Holei* | Ochrosia haleakalae | HI | PCH | R1 |
| Holsinger's cave beetle | Pseudanophthalmus holsingeri | VA | 12M/PLPCH | R5 |
| Hubbard's cave beetle* | Pseudanophthalmus hubbardi | VA | 12M/PLPCH | R5 |
| Hubricth's cave beetle | Pseudanophthalmus hubrichti | VA | 12M/PLPCH | R5 |
| humped tree snail* | Partula gibba | CNMI, Guam | PCH | R1 |
| Ihi* | Portulaca villosa | HI | PCH | R1 |
| Iliahi* | Santalum involutum | HI | PCH | R1 |
| impressed-nerve sedge | Carex impressinervia | AL, MS, NC, SC | 12M/PLPCH | R4 |
| Jackson Prairie crayfish* | Procambarus barbiger | MS | 12M/PLPCH | R4 |
| kamapuaa, pilo* | Kadua fluviatilis | HI | PCH | R1 |
| Karst Pond xyris(Kral's yellow-eyed grass) | Xyris longisepala | AL, FL | 12M/PLPCH | R4 |
| Kentucky creekshell* | Villosa ortmanni | KY, TN | 12M/PLPCH | R4 |
| Kings River pyrg | Pyrgulopsis imperialis | NV | 12M/PLPCH | R8 |
| Kirtland's snake | Clonophis kirtlandii | IL, IN, KY, MI, MO, OH, PA, WI | 12M/PLPCH | R3 |
| Kisatchie painted crayfish | Orconectes maletae | LA, TX | 12M/PLPCH | R2 |
| Kolea* | Myrsine fosbergii | HI | PCH | R1 |
| kupukupu makalii* | Cyclosorus boydiae | HI | PCH | R1 |
| lake sturgeon* | Acipenser fulvescens | AL, GA, IL, IN, IA, KS, KY, MI, MN, MO, NE, NY, ND, OH, PA, TN, VA, WI, Canada | 12M/PLPCH | R3 |
| Langford's tree snail* | Partula langfordi | CNMI | PCH | R1 |
| large-flowered Barbara's-buttons | Marshallia grandiflora | KY, MD, NC, PA, TN, WV | 12M/PLPCH | R5 |
| Las Vegas bearpoppy* | Arctomecon californica | AZ, NV | 12M/PLPCH | R8 |
| lesser Saint Croix skink* | Capitellum parvicruzae | USVI | 12M/PLPCH | R4 |
| lesser Virgin Islands skink* | Spondylurus semitaeniatus | USVI | 12M/PLPCH | R4 |
| Linda's roadside skipper | Amblyscirtes linda | AR, IL, KS, MO, OK, TN | 12M/PLPCH | R3 |
| little brown bat | Myotis lucifugus | AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NY, OH, OK, OR, PA, RI, SC, SD, TN, UT, VA, VT, WA, WI, WV, WY, Canada | Discretionary/PLPCH | R3 |
| Little Kennedy cave beetle* | Pseudanophthalmus cordicollis | VA | 12M/PLPCH | R5 |
| Long Valley speckled dace* | Rhinichthys osculus ssp. | CA | 12M/PLPCH | R8 |
| lowland loosestrife* | Lythrum flagellare | FL | 12M/PLPCH | R4 |
| Makou* | Ranunculus hawaiensis | HI | PCH | R1 |
| Maolioli* | Schiedea pubescens | HI | PCH | R1 |
| Mariana eight-spot butterfly* | Hypolimnas octocula marianensis | Guam | PCH | R1 |
| Mariana wandering butterfly* | Vagrans egistina | CNMI | PCH | R1 |
| Maui reedgrass* | Calamagrostis expansa | HI | PCH | R1 |
| Mojave poppy bee* | Perdita meconis | AZ, CA, NV, UT | 12M/PLPCH | R8 |
| Mona skink* | Spondylurus monae | PR | 12M/PLPCH | R4 |
| monarch butterfly* | Danaus plexippus | All US states(except AK), Canada, Mexico and more | PLPCH | R3 |
| Morro Bay scarab beetle | Polyphylla morroensis | CA | 12M/PLPCH | R8 |
| Morton's wild buckwheat | Eriogonum mortonianum | AZ | 12M/PLPCH | R2 |
| nanu* | Gardenia remyi | HI | PCH | R1 |
| Navajo bladderpod | Lesquerella navajoensis | AZ, NM, UT | 12M/PLPCH | R2 |
| No common name* | Eugenia bryanii | Guam | PCH | R1 |
| No common name* | Phyllanthus saffordii | Guam | PCH | R1 |
| No common name* | Tinospora homosepala | Guam | PCH | R1 |
| No common name* | Bulbophyllum guamense | CNMI, Guam | PCH | R1 |
| No common name* | Dendrobium guamense | CNMI, Guam | PCH | R1 |
| No common name* | Maesa walkeri | CNMI, Guam | PCH | R1 |
| No common name* | Nervilia jacksoniae | CNMI, Guam | PCH | R1 |
| No common name* | Tabernaemontana rotensis | CNMI, Guam | PCH | R1 |
| No common name* | Tuberolabium guamense | CNMI, Guam | PCH | R1 |
| no common name* | Asplenium diellaciniatum | HI | PCH | R1 |
| no common name* | Cyanea kauaulaensis | HI | PCH | R1 |
| No common name* | Cyperus neokunthianus | HI | PCH | R1 |
| No common name* | Deparia kaalaana | HI | PCH | R1 |
| No common name* | Festuca hawaiiensis | HI | PCH | R1 |
| No common name* | Huperzia stemmermanniae | HI | PCH | R1 |
| No common name* | Kadua haupuensis | HI | PCH | R1 |
| No common name* | Labordia lorenciana | HI | PCH | R1 |
| No common name* | Microlepia strigosa var. mauiensis | HI | PCH | R1 |
| No common name* | Phyllostegia brevidens | HI | PCH | R1 |
| No common name* | Phyllostegia helleri | HI | PCH | R1 |
| No common name* | Phyllostegia stachyoides | HI | PCH | R1 |
| No common name* | Ranunculus mauiensis | HI | PCH | R1 |
| No common name* | Sanicula sandwicensis | HI | PCH | R1 |
| No common name* | Schiedea diffusa ssp. diffusa | HI | PCH | R1 |
| No common name* | Stenogyne kaalae ssp. sherffii | HI | PCH | R1 |
| North American wolverine* | - | WA, OR, CA, MT, ID, WY | FL | R1 |
| northern spotted owl | Strix occidentalis caurina | CA, OR, WA | Reclass | R1 |
| Ohe* | Joinvillea ascendens ssp. ascendens | HI | PCH | R1 |
| Oktibbeha Riverlet crayfish | Hobbseus orconectoides | MS | 12M/PLPCH | R4 |
| Olua* | Hypolepis hawaiiensis var. mauiensis | HI | PCH | R1 |
| Orangeblack Hawaiian damselfly* | Megalagrion xanthomelas | HI | PCH | R1 |
| Oregon vesper sparrow | Pooecetes gramineus ssp. affinis | CA, OR, WA | 12M/PLPCH | R1 |
| overlooked cave beetle* | Pseudanophthalmus praetermissus | VA | 12M/PLPCH | R5 |
| Pacific sheath-tailed bat* | Emballonura semicaudata rotensis | CNMI, Guam | PCH | R1 |
| Pacific walrus | Odobenus rosmarusdivergens | AK and Russia | 12M/PLPCH | R7 |
| Palatka skipper (or Klot's skipper) | Euphyes pilatka klotsi | FL | 12M/PLPCH | R4 |
| Paudedo* | Hedyotis megalantha | Guam | PCH | R1 |
| Pecos pupfish* | Cyprinodon pecosensis | NM, TX | 12M/PLPCH | R2 |
| Pedernales River springs salamander | Eurecya spp. | TX | 12M/PLPCH | R2 |
| Phoenix (Squaw Peak) talussnail | Maricopella allynsmithi | AZ | 12M/PLPCH | R2 |
| Pipe Springs cryptantha | Cryptantha semiglabra | AZ, UT | 12M/PLPCH | R2 |
| Popolo* | Solanum nelsonii | HI | PCH | R1 |
| prairie gray fox | Urocyon cinereoargenteus ocythous | AR, IA, KS, MN, MO, ND, NE, OK, SD, WI | 12M/PLPCH | R3 |
| Puerto Rican skink* | Spondylurus nitidus | PR | 12M/PLPCH | R4 |
| pygmy rabbit | Brachylagus idahoensis | CA, ID, MT, NV, OR, UT, WA, WY | 12M/PLPCH | R1 |
| Railroad Valley toad | Anaxyrus nevadensis | NV | 12M/PLPCH | R8 |
| rayed bean* | Villosa fabalis | IN, KY, MI, NY, OH, PA, TN, VA, WV | PCH | R3 |
| red tree vole* | - | OR, CA | 12M/PLPCH | R1 |
| Rio Grande chub* | Gila pandora | CO, NM | 12M/PLPCH | R2 |
| Rio Grande cutthroat trout* | Oncorhynchus clarkii virginalis | NM, CO | 12M/PLPCH | R2 |
| Rio Grande sucker* | Catostomus plebeius | CO, NM | 12M/PLPCH | R2 |
| Rota blue damselfly* | Ischnura luta | CNMI | PCH | R1 |
| Rota partulid snail | Partula lutaensis | CNMI | Taxonomic Revision & PCH | R1 |
| rusty patched bumble bee* | Bombus affinis | IL, IN, IA, ME, MD, MA, MN, OH, VA, WV, WI | PCH | R3 |
| Sabino dancer | Argia sabino | AZ | 12M/PLPCH | R2 |
| saltmarsh sparrow | Ammospiza caudacuta | CT, DE, FL, GA, MA, MD, ME, NC, NH, NJ, NY, PA, RI, SC, VA | Discretionary /PLPCH | R5 |
| Santa Ana speckled dace* | Rhinichthys osculus | CA | 12M/PLPCH | R8 |
| Schoolhouse Springs leuctran stonefly (Louisiana needlefly) | Leuctra szczykoi | LA | 12M/PLPCH | R4 |
| Sheepnose* | Plethobasus cyphyus | AL, IL, IN, IA, KY, MN, MS, MO, OH, PA, TN, VA, WV, WI | PCH | R3 |
Shenandoah (Madden's) cave beetle* | Pseudanophthalmus limicola | VA | 12M/PLPCH | R5 |
| Siuslaw hairy-necked tiger beetle* | Cicindela hirticollis siuslawensis | OR, WA | 12M/PLPCH | R1 |
| Slevin's skink* | Emoia slevini | CNMI, Guam | PCH | R1 |
| smallscale darter* | Etheostoma microlepidum | KY, TN | 12M/PLPCH | R4 |
| smooth-barked St. John's wort | Hypericum lissophloeus | FL | 12M/PLPCH | R4 |
| Snuffbox* | Epioblasma triquetra | AL, AR, IL, IN, KS, KY, MI, MN, MS, MO, OH, PA, TN, VA, WV, WI | PCH | R3 |
| southern hognose snake* | Heterodon simus | FL, GA, SC | 12M/PLPCH | R4 |
| Southwest springs firefly | Bicellonycha wickershamorum | TX | 12M/PLPCH | R2 |
| speckled burrowing crayfish* | Fallicambarus danielae | AL, MS | 12M/PLPCH | R4 |
| Spectaclecase* | Cumberlandia monodonta | AL, AR, IL, IA, KS, KY, MN, MO, TN, VA, WV, WI | PCH | R3 |
| spiny scale crayfish* | Cambarus jezerinaci | KY, TN, VA | 12M/PLPCH | R5 |
| spinytail crayfish* | Procambarus fitzpatricki | MS | 12M/PLPCH | R4 |
| spotted turtle | Clemmys guttata | CT, DC, DE, FL, GA, IL, IN, MA, MD, ME, MI, NC, NH, NJ, NY, OH, PA, RI, SC, VA, VT, WV, Canada (Ontario, Quebec) | 12M/PLPCH | R5 |
| Suckley’s cuckoo bumble bee* | Bombus suckleyi | AK, CA, CO, ID, MT, ND, OR, SD, WA, Canada (British Columbia, Yukon, Northwest Territories, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia, and Newfoundland and Labrador) | 12M/PLPCH | R7 |
| tall western penstemon* | Penstemon hesperius | OR, WA | 12M/PLPCH | R1 |
| Tallapoosa orb | Quadrula asperataarcheri | AL | 12M/PLPCH | R4 |
| Texas cave (or Edwards Aquifer) diving beetle | Haideoporus texanus | TX | 12M/PLPCH | R2 |
| Tharp's bluestar | Castilleja ornata | NM, TX, Mexico | 12M/PLPCH | R2 |
| thin-necked cave beetle | Pseudanophthalmus parvicollis | VA | Discretionary /PLPCH | R5 |
| Threecorner milkvetch | Astragalus geyerivar. triquetrus | AZ, NV | 12M/PLPCH | R8 |
| three-tooth long-horned caddisfly (triaenodes) | Triaenodes tridontus | FL, OK | 12M/PLPCH | R2 |
| Ufa-halomtano* | Heritiera longipetiolata | CNMI, Guam | PCH | R1 |
| Verde Rim springsnail | Pyrgulopsis glandulosa | AZ | 12M/PLPCH | R2 |
| Virgin Islands bronze skink* | Spondylurus sloanii | USVI | 12M/PLPCH | R4 |
| West Indian manatee | Trichechus manatus latirostris | Caribbean, FL | 12M/PLPCH | R4 |
| West Virginia spring salamander* | Gyrinophilus subterraneus | WV | 12M/PLPCH | R5 |
| western chicken turtle | Deirochelys reticularia miaria | AR, LA, MO, MS, OK, TX | 12M/PLPCH | R2 |
| Westfall's clubtail | Gomphys westfalli | FL | 12M/PLPCH | R4 |
| White-margined penstemon | Penstemon albomarginatus | AZ, CA, NV | 12M/PLPCH | R8 |
| Wintu sideband | Monadenia troglodytes ssp. wintu | CA | 12M/PLPCH | R8 |
| wolverine | Gulo gulo luscus | CO, ID, MT, OR, UT, WA, WY | pCH | R6 |
| wood turtle | Glyptemys insculpta | CT, DC, IA, MA, MD, ME, MI, MN, NH, NJ, NY, OH, PA, RI, VA, VT, WI, WV, Canada (New Brunswick, Nova Scotia, Ontario, Quebec) | 12M/PLPCH | R5 |
| Yaqui catfish | Ictalurus pricei | AZ | Discretionary/PLPCH | R2 |
| Yellow-faced bee* | Hylaeus anthracinus | HI | PCH | R1 |
| Yellow-faced bee* | Hylaeus assimulans | HI | PCH | R1 |
| Yellow-faced bee* | Hylaeus facilis | HI | PCH | R1 |
| Yellow-faced bee* | Hylaeus hilaris | HI | PCH | R1 |
| Yellow-faced bee* | Hylaeus kuakea | HI | PCH | R1 |
| Yellow-faced bee* | Hylaeus longiceps | HI | PCH | R1 |
| Yellow-faced bee* | Hylaeus mana | HI | PCH | R1 |
| Yellowstone bison | Bison bison bison | MT, WY | 12M/PLPCH | R6 |
| Yuman Desert fringe-toed lizard | Uma rufopunctata | AZ, CA | 12M/PLPCH | R2 |
