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Photo by Ben Franklin; Bill Gray; Bill Gray; Bill Gray; Bill Gray; Bill Gray
Utah Division of Wildlife Resources; Utah Department of Natural Resources - Sources: ESRI, USGS, NOAA Habitat; Utah Department of Natural Resources - Sources: ESRI, USGS, NOAA Habitat Migration; Utah Department of Natural Resources - Sources: ESRI, USGS, NOAA Habitat Migration; Sources: ESRI, USGS, NOAA; Utah Department of Natural Resources - Sources: ESRI, USGS, NOAA Habitat Migration; Utah Department of Natural Resources - Sources: ESRI, USGS, NOAA Habitat Migration
Siler Pincushion Cactus
Pediocactus sileri
Other common names: Gypsum Cactus
NatureServe conservation status
Global (G-rank): G2G3
State (S-rank): S2
External links
Species range
Salt desert shrub community, mainly on gypsiferous members of the Triassic Moenkopi formation, at ca 900 to 1590 m in Kane and Washington cos.; Ariz.; a Dixie Divide-Virgin Basin endemic (Welsh et al. 2015).
Estimate from download of data from Utah Rare Plant Database on August 20 2021.
Geocat 207 observations: Extent of Occurrence: 396.3056 km2.
Threats or limiting factors
Threatened by ORVs, grazing, uranium mining, and long-term drought (USFWS 2008). Unauthorized collection is not known to be a threat (USFWS 2008). "Almost certainly this species, along with its habitat, will be affected in some manner by climate change; the magnitude and extent of the change cannot be quantified at this time (USFWS 2008). Other possible future threats include gypsum mining, oil and gas production, a proposed water pipeline, and increased urban development in Utah (USFWS 2008).
