Barneby ridge-cress (Lepidium barnebyanum)
Where Listed: WHEREVER FOUND
A perennial, herbaceous plant in the mustard family (Brassicaceae). It is approximately 5 to 15 centimeters (cm) (2 to 6 in.) tall and usually forms raised clumps or cushions (pulvinate growth form) up to 20 cm (8 in.) wide. The species arises from a deep woody taproot; its stems are smooth and hairless with narrow leaves clustering at the base of the plant. The species cream-colored flowers are about 5 to 7 millimeters (mm) (0.25 in.) across and alternate along a stem rising 2.5 to 6 cm (1 to 2.5 in.) above the base of the plant. The flowers begin to bloom in early May. Seeds are quite small, about 1 mm (0.04 in.) across, and are borne in elliptical seed pods called silicles, which are about 4 to 5 mm (0.2 in.) long. The seeds are shed beginning in June and continuing into July (Reveal 1967; Welsh and Reveal 1977; Welsh et al. 1987)
This species is listed wherever it is found, but
|Status||Date Listed||Lead Region||Where Listed|
|09/28/1990||Mountain-Prairie Region (Region 6)|
» Federal Register Documents
» RecoveryRecovery Plan Information Search
|Date||Title||Plan Action Status||Plan Status|
|07/23/1993||Barneby Ridge-cress||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|
|08/04/2011||Lepidium barnebyanum (Barneby ridge-cress) 5-Year Review|
» Critical Habitat
No critical habitat rules have been published for the Barneby ridge-cress.
» Conservation Plans
No conservation plans have been created for Barneby ridge-cress
No petition findings have been published for the Barneby ridge-cress.
» Life History
The species habitat occurs at an elevation of 6,200 to 6,500 feet on poorly developed soils derived from marly shales in a zone of interbedding geologic strata from the Uinta and Green River Formations (Reveal 1967; Welsh and Reveal 1977; Welsh 1978; Welsh et al. 1987; U.S. Fish and Wildlife Service 1989).
Reproduction is sexual, with flowering occuring from April to May and fruiting occurs May to June. The specific pollination mechanism and vectors are not known.
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