Identity
Unique IDELEMENT_GLOBAL.2.161232
Element CodePDAST0H0P0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusAntennaria
Other Common NamesCharleston Mountain Pussytoes (EN) Charleston Mountain pussytoes (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.
Taxonomic CommentsPhylogenetic analysis indicates Antennaria is a well-supported, monophyletic group (Bayer et al. 1996).
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2021-11-22
Change Date2021-12-06
Edition Date2021-11-22
Edition AuthorsRoth, E. (1987), rev. J. Nachlinger & K. Maybury (1997), rev. L. Morse (1999), rev. J. Morefield (1999); Cordeiro, J. (2010), rev. C. Nordman (2021).
Threat ImpactVery high - high
Range Extent<100 square km (less than about 40 square miles)
Number of Occurrences1 - 5
Rank ReasonsThis narrow range endemic is only known from the Spring Mountains including Charleston Peak, ridgelines north and south of Charleston Peak, upper slopes of Lee Canyon, and Mummy Mountain. The mountain range as a whole is isolated by desert, which prevents alpine plant migration to other peaks in the Great Basin. The entire species is probably a single genotype, all plants are female, and are genetically identical ramets. Its lack of any genetic variation contributes to its restriction to a narrow habitat-range, and reduces its ability to survive changing climatic or other conditions. It is further threatened by grazing and other impacts from horses, recreation impacts from hiking off trail, development, and landslides.
Range Extent CommentsAntennaria soliceps only occurs in the western United States, in southern Nevada. It is restricted to a small section of the Spring Mountains, Kyle and Lee Canyons, in Clark County, Nevada. These mountains are isolated by desert from other mountainous areas (Bayer and Minish 1993, Flora of North America Editorial Committee 2006, Morefield 2001). Its range extent is only 12 square kilometers (iNaturalist 2021, NatureServe 2021, SEINet 2021).
Occurrences CommentsAntennaria soliceps occurs at 25 sites which are considered to be within two occurrences, since most of the sites are close to each other (NatureServe 2021). It occurs between Griffith Peak and Charleston Peak including Charleston Peak, Mummy Mountain, Kyle and Lee Canyons (Morefield 2001) with early collection records from Rainbow Falls, Twin Falls, and ridge above Twin Falls (Clokey 1951). All the plants seem to belong to a single genetic individual with a single female genotype that reproduces asexually, through apomixis and stolons (Bayer and Minish 1993).
Threat Impact CommentsThreats to Antennaria soliceps include impacts from free roaming horses, recreational hiking on scree slopes, expansion of southern Nevada development on the Spring Mountain area, landslides, habitat shifting and alteration from climate change.