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San juan tumble-mustard
Thelypodiopsis divaricata
NatureServe conservation status
Global (G-rank): G3
State (S-rank): S3
External links
Species range
Estimate from download of data from Utah Rare Plant Database on July 18, 2024.
Geocat 55 observations: Extent of Occurrence: 27,727.973 km2.
Historic observations over 40 years old were not used.
Fine textured seleniferous substrates of Mancos Shale, Mesa Verde Group, Tropic Shale, Dakota Morrison, Chinle, and Moenkopi formations, in shadscale, blackbrush, and pinyon-juniper communities at 1220 to 2075 m in Carbon, Emery, Garfield, Grand, e. Kane, San Juan, and Wayne cos.; a Navajo Basin endemic (Welsh et al 2015).
Threats or limiting factors
The main threats are from habitat degradation due to grazing, energy and mineral extraction, drought, as well as road and utility line maintenance.
Threats compiled using observations and notes from Utah Rare Plant Database and Utah Geospatial Resource Center GIS Data downloaded in 2024. Severity of impacts are not well known so ranges are provided where appropriate. Almost all occurrences are within grazing allotments. There are 14 occurrences are within UREZ phase 1 solar development zone areas and 16 are within UREZ phase 2 solar development zone areas. A few occurrences are near oil and gas wells, coal leases, uranium mines, and permitted mineral mines. Over half of occurrences are near trails and pathways and almost all known occurrences are near roads. A few are near railroads and electrical lines. Drought and climate change is also a threat and likely impacting this species through out it's range (Wrobleski, 2023).
