L.& J. Shultz
Identity
Unique IDELEMENT_GLOBAL.2.145017
Element CodePDSCR1L720
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPlantaginales
FamilyPlantaginaceae
GenusPenstemon
Other Common NamesPine Valley Penstemon (EN) Pine Valley penstemon (EN)
Concept ReferenceKartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-05-21
Change Date2024-05-21
Edition Date2024-05-21
Edition AuthorsFranklin, Ben, rev. B. Franklin (1996), rev. A.. Tomaino (2009), rev. M. Russo (2011), rev. N. Ventrella (2024)
Threat ImpactHigh
Range Extent100-250 square km (about 40-100 square miles)
Number of Occurrences6 - 20
Rank ReasonsPenstemon pinorum is a perennial herb that is endemic to a small area straddling the Washington-Iron County line in southwestern Utah, USA. Though locally abundant, the species is known from a total area of less than 160 square kilometers. One population has suffered habitat destruction and disturbance as the result of firewood removal and mining exploration. This species may be locally abundant, but the total range where the species occurs is small and threats are high.
Range Extent CommentsPenstemon pinorum occurs in the southwestern United States and is a narrow endemic, known only from an area straddling the Washington-Iron County line in southwest Utah. It occurs in the hills south to southwest of Newcastle, east of Old Irontown, in the Red Eightmile hills to the north, and onto the southeast slopes of the Antelope Range (Franklin 2005). Range extent was estimated using herbarium specimens, photo-based observations, NatureServe Network occurrence data, and data from the Utah Rare Plant Database collected between 1993 and 2020 (UNHP 2021, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Occurrences CommentsBy applying a 2 km separation distance to population location data from the Utah Rare Plant Database, herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2020, there are six estimated occurrences (UNHP 2021, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact CommentsThere are three occurrences on Bureau of Land Management administered lands that are within a greenwood fuel cutting area where removal of overstory and ground disturbances are threatening the species' survival (UNHP 2020). Also on Bureau of Land Management lands, there are several locations within one large occurrence where plants, over an area measurable in acres, are stunted and sickly; this may be human-caused. Chaining at one location resulted in the loss of habitat (Franklin 2005). Mining-related activities have resulted in loss of habitat. Long-term effects of grazing, if any, are unknown. Off-road-vehicle travel may also pose a threat (UNHP 2020), and this species may be at an increased risk from wildfire due to the presence of invasive annual Bromus spp., coupled with increased temperatures and drought conditions expected under climate change.