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Mentzelia inyoensis

H.J. Thompson & Prigge

Inyo Blazingstar

G2Imperiled Found in 1 roadless area NatureServe Explorer →
G2ImperiledGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.791793
Element CodePDLOA032Z0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderViolales
FamilyLoasaceae
GenusMentzelia
Other Common Names
Inyo blazingstar (EN)
Concept Reference
Holmgren, N.H., P.K. Holmgren, and A. Cronquist. 2005. Intermountain flora. Volume 2, part B. Subclass Dilleniidae. The New York Botanical Garden Press. 488 pages.
Taxonomic Comments
The use of the name in Hickman (1993) was not a valid publication. Mentzelia inyoensis was legitimized in Thompson and Prigge (2004).
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2022-07-20
Change Date2022-07-20
Edition Date2022-07-20
Edition AuthorsJ.D. Morefield (2006), rev. A. Treher and R. Bittman (2015), rev. Treher (2022)
Threat ImpactUnknown
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences6 - 20
Rank Reasons
Mentzelia inyoensis is a perennial herb known from about less than 10 occurrences, found in the White Mountains of Esmeralda Co., Nevada, and Mono and Inyo counties, California, and with one disjunct area of southeastern Churchill County, Nevada. Surveys of suitable habitat are needed to determine if this species is more common and widely distributed than currently understood. Surveys to identify threats and population size are also necessary.
Range Extent Comments
Mentzelia inyoensis occurs in the western United States in California (Inyo and Mono Counties) and Nevada (Esmeralda County) in the White Mountains and in Churchill County, Nevada (NatureServe 2022).
Occurrences Comments
There are eight occurrences in California and 4-5 in Nevada.
Threat Impact Comments
Wild horses are cited as a threat at one site in California (CNDDB 2022). Overall threats are not reported for occurrences.
Ecology & Habitat

Habitat

This species is documented growing on a variety of rocky substrates including carbonate rocks/gravel, calcareous pumice sand, whitish ash deposits, and clay soils of hillsides. It occurs in habitats that include sagebrush scrub, shadscale scrub, and pinyon-juniper woodlands (Thompson and Prigge 2004) and grows at elevations of 1,155 to 1,935 m (CNDDB 2022).
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferShrubland/chaparral
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaS1Yes
NevadaS1Yes
Threat Assessments
ThreatScopeSeverityTiming
8 - Invasive & other problematic species, genes & diseasesUnknownUnknownHigh (continuing)
8.1 - Invasive non-native/alien species/diseasesUnknownUnknownHigh (continuing)

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Plant Characteristics
DurationBIENNIAL, PERENNIAL
Economic Value (Genus)No
Roadless Areas (1)
Nevada (1)
AreaForestAcres
Boundary Peak (NV)Inyo National Forest21,851
References (6)
  1. California Natural Diversity Database (CNDDB). 2022. RareFind Version 5.2.14. California Department of Fish and Game, Sacramento.
  2. Flora of North America Editorial Committee (FNA). 2016. Flora of North America north of Mexico. Vol. 12. Magnoliophyta: Vitaceae to Garryaceae. Oxford Univ. Press, New York. xxiv + 603 pp.
  3. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  4. Holmgren, N.H., P.K. Holmgren, and A. Cronquist. 2005. Intermountain flora. Volume 2, part B. Subclass Dilleniidae. The New York Botanical Garden Press. 488 pages.
  5. NatureServe. 2022. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  6. Thompson, H.J., and B.A. Prigge. 2004. A new species of <i>Mentzelia </i>section Bartonia (Loasaceae) from the great basin desert of California and Nevada. Madrono 51(4): 379-383.