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Copper canyon milkvetch
Astragalus cutleri
NatureServe conservation status
Global (G-rank): G4T1T2
State (S-rank): S2
External links
Species range
Estimate from download of data from Utah Rare Plant Database on April 5th 2023.
Geocat 27 observations: Extent of Occurrence: 268.521 km2.
Historic observations over 40 years old were not used.
Saltbush and blackbrush communities, on Permian formations (and on the Triassic Chinle and its Mossback member and Moenkopi formations), at ca 1155 to 1250 m, in canyon subsequent to the San Juan Arm both n. and s. of Lake Powell , San Juan Co., Utah; a Navajo Basin endemic (Welsh et al. 2015).
Threats or limiting factors
1/31/2024: Comments Nora Ventrella: Navajo Nation has 1 known EO of this species in Copper Canyon. Threats include drought/climate change (major threat), and grazing by native rodents and insects. Rodents cache seed pods and insects will defoliate and clip the stems, is worse when drought conditions are severe. Grazing by nonnative burros has also been listed as a threat in the past- mentioned by D. Roth, but has not been observed in recent years.
