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Photo by Meghan McCormick; Ava Brinkley; Meghan McCormick
Utah Division of Wildlife Resources; Sources: ESRI, USGS, NOAA
Barneby's Reed-Mustard
Hesperidanthus barnebyi
Other common names: Sye's Butte Plainsmustard
NatureServe conservation status
Global (G-rank): G2
State (S-rank): S2
External links
Species range
Endemic to the Canyonlands of south-central Utah. Mixed shadscale, eriogonum, and ephedra communities on the Triassic Chinle and Moenkopi formations at ca 1705 to 1985 m in Emery and Wayne cos.; a Navajo Basin endemic (Welsh et al. 2015).
Estimate from download of data from Utah Rare Plant Database on August 20 2021.
Geocat 30 observations: Extent of Occurrence: 251.732 km2.
Threats or limiting factors
The Emery County occurrences are threatened by habitat damage associated with potential uranium mining. An access road leading to nearby mining claims bisects the hillside where many plants occur, and there is concern that the annual assessment work required to maintain these claims may cause some habitat degradation. Abandoned uranium mines are also present near these occurrences; should mining ever resume at those locations, additional impacts are possible. The Wayne County occurrences are vulnerable to trampling by hikers in Capitol Reef National Park. Domestic livestock grazing may have had an impact on this species historically, but is not believed to be a significant threat currently due to grazing management by the Federal agencies (USFWS 2011).
