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).
This species is listed wherever it is found, but
|Status||Date Listed||Lead Region||Where Listed|
|01/14/1992||Mountain-Prairie Region (Region 6)|
» Federal Register Documents
» RecoveryRecovery Plan Information Search
|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|
|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|
|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
No petition findings have been published for the 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
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