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Mokiak milkvetch
Astragalus mokiacensis
NatureServe conservation status
Global (G-rank): G3G4Q
State (S-rank): S1
External links
Species range
Estimate from download of data from Utah Rare Plant Database on March 20, 2024.
Geocat observations: 10 Extent of Occurrence: 2.997 km2.
Only Historic observations over 40 years old available for ranking at time of export.
Limestone outcrops and gravel with Hymenoclea, Joshua tree, Larrea, and Ferocactus, at 1000 to 1250 m, in the Beaver Dam Mountains, Washington County, Utah and adjacent Mohave County, Arizona and Clark County Nevada (Welsh et al. 2015).
Threats or limiting factors
Utah pop's of this plant are present in only the wettest years and are perennial and entirely dependent on seed for survival due to prevalence of extreme droughts in its habitat and being restricted to a few low elevation limestone ridgetops and talus (UNPS, accessed 2024).
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. There are 10 occurrences of Astragalus monkiacensis reported in Utah within the last 40 years. These occurrences are closely clustered together, and share many of the same threats. The main threats to these occurrences are due to impacts from grazing, damage from fire and fire suppression and increased fire intensity, utility and road maintenance, and drought. All 10 of these occurrences that are within the boundaries of cattle grazing allotments, although impacts of cattle on these areas and these occurrences is unknown. All 10 occurrences are within the boundaries of a past wildfire, although impacts from the fire and fire suppression tactics are unknown. 6 occurrences are near potential energy transmission lines, and 5 are near established electric lines. All occurrences are near Utah roads, although only 1 is near a major road. Drought and climate change is also a threat and likely impacting this species through out it's range (Wrobleski, 2023).
