Woot. & Standl.
Identity
Unique IDELEMENT_GLOBAL.2.1194176
Element CodePDSCRIL870
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPlantaginales
FamilyPlantaginaceae
GenusPenstemon
Concept ReferenceFlora of North America Editorial Committee (FNA). 2019. Flora of North America north of Mexico. Vol. 17: Magnoliophyta: Tetrachondraceae to Orobanchaceae. Oxford Univ. Press, New York. xxiv + 737 pp.
Taxonomic CommentsThe Flora of North America (2017) treatment includes Penstemon pseudoparvus in Penstemon oliganthus, two taxa previously treated as distinct (Kartesz 1994).
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2021-06-10
Change Date2021-06-10
Edition Date2021-06-10
Edition AuthorsTreher (2021)
Threat ImpactUnknown
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences21 - 80
Rank ReasonsPenstemon oliganthus occurs in the southwestern United States in Arizona and New Mexico with around less than 80 occurrences documented. Threats and trends are not well documented for this taxon. There are many occurrences on U.S. Forest Service lands.
Range Extent CommentsPenstemon oliganthus occurs in the southwestern United States in Arizona and New Mexico. Range extent was calculated using herbarium collections and photo based observations (iNaturalist 2021, SEINet 2021). The species is reported from Colorado but these reports are mostly attributed to Penstemon griffinii (Weber and Wittman 2000), however newer specimens, especially those from southern Colorado, should be examined and annotated (SEINet 2021).
Occurrences CommentsBased on herbarium collections and photo based observations, there are less than 80 documented occurrences (iNaturalist 2021, SEINet 2021).
Threat Impact CommentsPotential threats are grazing and forest fire but research is needed to determine if there is an impact.