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Paria Evening-primrose
Oenothera caespitosa ssp. navajoensis
NatureServe conservation status
Global (G-rank): G5T4?
State (S-rank): S3
External links
Species range
Estimate from download of data from Utah Rare Plant Database on July 18, 2024.<br/>Geocat 49 observations: Extent of Occurrence: 64,861.055 km2.<br/>Historic observations over 40 years old were not used.<br/>Shadscale, greasewood, blackbrush, galleta, rabbitbrush, ephedra, sagebrush, pinyon-juniper, and mountain brush communities at 1125 to 2380 m in Carbon, Daggett, Duchesne, Emery, Garfield, Grand, Kane, San Juan, Uintah, and Wayne cos.; Colo., N. Mex., and Ariz. (Welsh et al. 2015).
Threats or limiting factors
The main threats are from habitat loss due to urbal sprawl and habitat degradation due to grazing, energy and mineral extraction, drought, and road maintenance. <br/>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.<br/>Many occurrences are within grazing allotments.Some occurrences are likely impacted by oil and gas extraction as well as maintenance of roads and utility lines. Occurrences within UREZ phase 1 zone areas may be impacted in the future by solar and/or wind development. Drought and climate change is also a threat and likely impacting this species through out it's range (Wrobleski, 2023). Some occurrences are impacted by habitat loss due to urban sprawl.
