Clay reed-mustard (Schoenocrambe argillacea)
Where Listed: WHEREVER FOUND
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).
- 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
|Status||Date Listed||Lead Region||Where Listed|
|01/14/1992||Mountain-Prairie Region (Region 6)|
» Federal Register Documents
|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|
|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|
|05/27/2016||81 FR 33698 33700||ETWP; Initiation of 5-Year Status Reviews of 21 Species in the Mountain-Prairie Region|
|Date||Title||Plan Action Status||Plan Status|
|09/14/1994||Utah Reed-Mustards (3 spp.)||View Implementation Progress||Final|
|Date||Citation Page||Title||Document Type|
|05/27/2016||81 FR 33698 33700||ETWP; Initiation of 5-Year Status Reviews of 21 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||
|10/06/2008||73 FR 58261 58262||5-Year Reviews of Three Wildlife Species and Eight Plant Species in the Mountain-Prairie Region||
|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.
» Life History
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.
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.
FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.