Nevada Fish & Wildlife Office
Pacific Southwest Region

Amargosa niterwort
(Nitrophila mohavensis)

Class: Magnoliopsida
Order: Caryophyllales
Family: Chenopodiaceae
Genus: Nitrophila
Species: mohavensis
 
Habitat: from the Amargosa River drainage in extreme southeastern Inyo County, California and from Nye County, Nevada
 

Official Status:

Endangered
 

Life History:

This member of the Chenopodiaceae family occupies the most localized habitat of all plant species endemic to Ash Meadows. Although little is known about its life history or habitat requirements, observations indicate it is an extremely hardy species that is tolerant of high soil salinity and alkalinity. As a result, no other plant species occupy this habitat in many locations. The plant rarely exceeds 4 inches in height and is perennial. Large, rhizomatous roots connect many seemingly individual plants within a colony. Flowering occurs in the late spring and flowers are small.

 

Distribution and Habitat:

 

The Amargosa niterwort's habitat is limited to highly alkaline, moist, salt-encrusted clay soils within the southern portion of Carson Slough in both Nevada and California.

 

Threats:

 

The loss of habitat by recent agricultural and municipal development activities, the clearing of land for road construction,the removal of ground water and diversion of surface spring flow, and local mining activities threaten the integrity of the species' habitat and,therefore, their survival.

 

Actions / Current Information:

 

Date Citation Page Title
03/05/2008 73 FR 11945 11950 Initiation of 5-Year Reviews of 58 Species in California and Nevada; Availability of Completed 5-Year Reviews in California, Nevada and Southern Oregon
11/03/2005 70 FR 66842 66844 Endangered and Threatened Wildlife and Plants; Extension of Comment Period for the Valley Elderberry Longhorn Beetle, Smith's Blue Butterfly, Delhi Sands Flower Loving Fly, Morro Shoulderband Snail, Giant Garter Snake, San Francisco Garter Snake, Island Night Lizard, California Least Tern, Least Bell's Vireo, Chinese Camp Brodiaea, Mariposa Pussypaws, San Clemente Island Indian Paintbrush, Spring-Loving Centaury, Springville Clarkia, San Clemente Island Larkspur, Santa Barbara Island Dudleya, Ash Meadows Gumplant, San Clemente Island Woodland Star, San Clemente Island Lotus, San Clemente Island Bush Mallow, Amargosa Niterwort, Eureka Valley Evening Primrose, Yreka Phlox, Hartweg's Golden Sunburst, San Joaquin Adobe Sunburst, Santa Cruz Island Rock-Cress, Keck's Checker-mallow, Eureka Dune Grass, Kneeland Prairie Pennycress, Hidden Lake Bluecurls, and Red Hills Vervain 5-Year Reviews.
07/07/2005 70 FR 39327 39329 Endangered and Threatened Wildlife and Plants; Initiation of 5-Year Reviews of the Valley Elderberry Longhorn Beetle, Smith's Blue Butterfly, Delhi Sands Flower Loving Fly, Morro Shoulderband Snail, Giant Garter Snake, San Francisco Garter Snake, Island Night Lizard, California Least Tern, Least Bell's Vireo, Chinese Camp Brodiaea, Mariposa Pussypaws, San Clemente Island Indian Paintbrush, Spring-Loving Centaury, Springville Clarkia, San Clemente Island Larkspur, Santa Barbara Island Dudleya, Ash Meadows Gumplant, San Clemente Island Woodland Star, San Clemente Island Lotus, San Clemente Island Bush Mallow, Amargosa Niterwort, Eureka Valley Evening Primrose, Yreka Phlox, Hartweg's Golden Sunburst, San Joaquin Adobe Sunburst, Santa Cruz Island Rock-Cress, Keck's Checker-mallow, Eureka Dune Grass, Kneeland Prairie Pennycress, Hidden Lake Bluecurls, and Red Hills Vervain
05/20/1985 50 FR 20777 20794 Determination of Thr. Status w/ Crit. Hab for 6 Plants & 1 Insect in Ash Meadows, NV & CA; & End. Status w/ Crit. Hab. for 1 Plant in Ash Meadows; 50 FR 20777-20794
10/13/1983 48 FR 46590 46598 Proposed End. Status & Crit. Hab. for Seven Plant & One Insect Species in Ash Meadows, NV & CA; 48 FR 46590-46598
     
     
     
Last updated: April 16, 2014