CPC Plant Profile: Clay Reed-mustard
Search / Plant Profile / Hesperidanthus argillaceus
Plant Profile

Clay Reed-mustard (Hesperidanthus argillaceus)

Flowers of Schoenocrambe argillacea Photo Credit: J.S. Peterson
Description
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: Federally Threatened
  • Family: Brassicaceae
  • State: UT
  • Nature Serve ID: 129144
  • Date Inducted in National Collection: 12/01/2021

Schoenocrambe argillacea is endemic to a small area in the Uintah Basin, Uintah County, Utah. There are 3 known populations with fewer than 10,000 individuals total. It is a listed threatened species. S. argillacea is an herbaceous perennial and is distinct in having linear to narrowly oblong sessile cauline leaves. Its leaves are fleshy with a white waxy surface. It has stems 1.5 dm tall and the flowers are pale lavender to whitish with conspicuous purple veins. It blooms in late April and early May.

Participating Institutions
Updates
  • 09/15/2020
  • Genetic Research

U.S. Fish and Wildlife Service, Ecological services Division, and Bureau Land Management are conducting a Schoenocrambe/Glaucocarpum phylogenetic study. They are researching its taxonomy.

Nature Serve Biotics
  • 05/02/2017

Endemic to a small area in the Uinta Basin, Uintah County, Utah. There are 6-7 mapped occurrences clustered in 3 ""populations,"" with fewer than 10,000 individuals in total.The species is threatened by renewed intense oil and gas exploration and development in the Basin; in addition, its entire range is underlain by oil shale, the mining of which is a significant potential threat.

Rita Dodge, Heidi Simper
  • 01/01/2010

Oil and gas exploration and development in the Basin Entire range underline by oil shale so mining is a significant potential threat Trampling by livestock

Rita Dodge, Heidi Simper
  • 01/01/2010

Fewer than 10,000 individuals

Rita Dodge, Heidi Simper
  • 01/01/2010

U.S. Fish and Wildlife Service, Ecological services Division, and Bureau Land Management are conducting a Schoenocrambe/Glaucocarpum phylogenetic study. They are researching its taxonomy.

Rita Dodge, Heidi Simper
  • 01/01/2010

Unknown

Rita Dodge, Heidi Simper
  • 01/01/2010

Ex situ seed conservation Propagation research Habitat protection Reintroduction research Continued monitoring

Rita Dodge, Heidi Simper
  • 01/01/2010

Seed conservation Propagation research Reintroduction research

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Photos
Nomenclature
Taxon Hesperidanthus argillaceus
Authority (S.L. Welsh & N.D. Atwood) Al-Shehbaz
Family Brassicaceae
CPC Number 9480
ITIS 823211
USDA SCAR5
Common Names Clay reed-mustard | Clay Thelypody | Uinta Basin plainsmustard
Associated Scientific Names Schoenocrambe argillacea | Hesperidanthus argillaceus | Thelypodiopsis argillacea
Distribution Uintah County, Utah
State Rank
State State Rank
Utah S1
Habitat

Desert shrub community often on clay soils rich in gypsum.

Ecological Relationships

Unknown

Pollinators
Common Name Name in Text Association Type Source InteractionID

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