Species Profile
Environmental Conservation Online System

Clay reed-mustard (Schoenocrambe argillacea)

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

A perennial herbaceous plant, with sparsely leafed stems 15 to 30 centimeters (cm) (6 to 12 inches) tall arising from a woody root crown. The leaves are very narrow with a smooth margin, 10 to 35 millimeters (mm) (0.4 to 1.4 inches) long and, usually, less than 2 mm (0.1 inch) wide. The leaf blades are alternately arranged on the stem and, for the most part, are attached directly to the stem without a petiole. The flowers of S. argillacea have petals that are pale lavender to whitish with prominent purple veins and measure 8 to 11 mm (0.3 to 0.4 inch) long and 3.5 to 4.5 mm (0.14 to 0.18 inch) wide. The entire flowers are about 1 cm (0.4 inch) across in full anthesis and are displayed in a raceme of 3 to 20 flowers at the end of the plantís leafy stems (Welsh and Atwood 1977, Rollins 1982, Welsh et al. 1987).

Map of Species occurrence

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Map Image Map of Species occurrence Map of Species occurrence

This map represents our best available information about where a species is currently known to or or is believed to occur; however, it should NOT be used as an official species list for Section 7 Consultation purposes. To obtain an official species list for this purpose, please visit the Information, Planning, and Conservation (IPaC) System (click here: http://ecos.fws.gov/ipac)



This species is listed wherever it is found, but
    • States/US Territories in which the Clay reed-mustard is known to or is believed to occur:  Utah
    • US Counties in which the Clay reed-mustard is known to or is believed to occur:  View All
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
01/14/1992 Mountain-Prairie Region (Region 6)

» Federal Register Documents

Most Recent Federal Register Documents (Showing 4 of 4)
Date Citation Page Title
10/06/2008 73 FR 58261 58262 5-Year Reviews of Three Wildlife Species and Eight Plant Species in the Mountain-Prairie Region
09/23/1993 58 FR 49522 49523 Availability of a Draft Recovery Plan for Three Utah Reed-Mustards; Clay Reed-Mustard (Schoenocrambe argillacea), Barnaby Reed-Mustard (Schoenocrambe barnebyi), and Shrubby Reed-Mustard (Schoenocrambe suffrutescens) for Review and Comment
01/14/1992 57 FR 1398 1403 ETWP; Final Rule to Determine the Plant Schoenocrambe argillacea, Clay Reed-Mustard, to be a Threatened Species, and the Plant Schoenocrambe barnebyi, Barneby Reed-Mustard, to be an Endangered Species
04/12/1991 56 FR 14910 14914 ETWP; Two Utah Plants, Schoenocrambe argillacea (Clay Reed-Mustard) and Schoenocrambe barneby (Barneby Reed-Mustard), Proposed as Endangered; 56 FR 14910 14914

» Recovery

Recovery Plan Information Search
Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
09/14/1994 Utah Reed-Mustards (3 spp.) View Implementation Progress Final
Other Recovery Documents (Showing 2 of 2)
Date Citation Page Title Document Type
10/06/2008 73 FR 58261 58262 5-Year Reviews of Three Wildlife Species and Eight Plant Species in the Mountain-Prairie Region
  • Notice 5-year Review, Initiation
  • 09/23/1993 58 FR 49522 49523 Availability of a Draft Recovery Plan for Three Utah Reed-Mustards; Clay Reed-Mustard (Schoenocrambe argillacea), Barnaby Reed-Mustard (Schoenocrambe barnebyi), and Shrubby Reed-Mustard (Schoenocrambe suffrutescens) for Review and Comment
  • Notice Recovery Plan Avail.
  • Five Year Review
    Date Title
    07/11/2011 Schoenocrambe argillacea (clay reed-mustard) 5-Year Review

    » Critical Habitat

    No critical habitat rules have been published for the Clay reed-mustard.

    » Conservation Plans

    No conservation plans have been created for Clay reed-mustard

    » Petitions

    No petition findings have been published for the Clay reed-mustard.

    » Life History

    Habitat Requirements

    Grows on clay soils rich in gypsum, overlain with sandstone talus, that are derived from a mixture of shales and sandstones from the zone of contact between the Uinta and Green River geologic formations. The species most commonly occurs on steep north-facing slopes.

    Reproductive Strategy

    Flowering occurs from April to May and fruiting occurs May to June. Reproduction is sexual.

    » Other Resources

    NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

    ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

    Last updated: July 28, 2014