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Stemless beardtongue
Penstemon acaulis
NatureServe conservation status
Global (G-rank): G2
State (S-rank): S2
External links
Species range
Estimate from download of data from Utah Rare Plant Database on October 20th 2022.
Geocat 77 observations: Extent of Occurrence: 480.288 km2.
37 of 77 observations are historical. All but 4 observations are within EOs revisited more recently.
Endemic to small area mostly west of Flaming Gorge Reservoir in both Utah and Wyoming, with some recently discovered small populations just eat of the reservoir reaching down into Uintah Co., Utah (Stevens et al. 2020).
Threats or limiting factors
Locations are threatened by recreational activities in the Flamingo Gorge Natural Resource Area and by their presence on privately owned lands. One Utah population is in an area where a large population of deer winter, but no negative impact by deer has been confirmed. Additionally, trampling by cattle in a number of areas was noted in 2011 (Jouseau 2012). Drought and other aspects of climate change may also be a threat to this species given the region where it is found has a high evapotranspiration rate and low rainfall (Jouseau 2012). Long term drought is occurring throughout the range of this species (Jouseau 2012).The Utah Division of Water Resources confirmed the Utah is now in "extreme" or "exceptional" drought which is likely impacting this species in similar ways as it is other perennial forbs in Utah. There are roads and utility line (transmission) near occurrences.
