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Photo by D. Atwood
Sources: ESRI, USGS, NOAA; D. Atwood
Creeping Draba
Draba sobolifera
NatureServe conservation status
Global (G-rank): G1
State (S-rank): S1
External links
Phenology
Flowers from June to August
Diagnostic characteristics
Draba sobolifera is closely related to Draba ramulosa, which also occurs on igneous talus slopes of the Tushar Mountains. Draba sobolifera has green leaves with hairs that are simple, once-forked or 4-rayed stellate hairs, the leaves are all basal and do not grow on the flowering stem, the fruit are scattered with simple hairs or can also be hairless and this species known across the alpine areas of the Tushar Mountains. Draba ramulosa has grayish green leaves that are covered in finely branched hairs, and leaves that are both basal and loosely spaced on the flowering stem, the fruits are covered in once-forked and dendritically branched hairs and is known only from Mt. Belknap above treeline at the eastern end of the Tushar Mountains.
Species range
Endemic to the Tushar Mountains, Beaver and Piute Counties, Utah.
Threats or limiting factors
Recreational use are present within this species' habitat and are potential threats (Tate pers. comm., 2005 cited by Franklin 2005). Climate change is also a threat including droughts and rapid snowmelt (Alexander 2015).
