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Eremothera nevadensis

(Kellogg) W.L. Wagner & Hoch

Nevada Evening-primrose

G3Vulnerable Found in 4 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.140117
Element CodePDONA03140
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderMyrtales
FamilyOnagraceae
GenusEremothera
Synonyms
Camissonia nevadensis(Kellogg) Raven
Other Common Names
Nevada suncup (EN) Nevada Suncup (EN)
Concept Reference
Kartesz, 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 Date2025-03-20
Change Date2001-05-30
Edition Date2025-03-20
Edition AuthorsMacBryde, Bruce (rev.); 1st: 99-06-04., rev. Johnson, J. (2025)
Threat ImpactMedium
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Camissonia nevadensis is an annual herb that is endemic to central-western Nevada, United States, occurring in seasonally wet clay or sandy soils in open places in valleys and foothills. Primary threats to the species include cheatgrass invasion and wildfires.
Range Extent Comments
Eremothera nevadensis is known only from west-central Nevada, United States (FNA 2021). Range extent was estimated using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1994 and 2025 (RARECAT 2024, GBIF 2025, iNaturalist 2025, NatureServe 2025, SEINet 2025).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1994 and 2025, it is estimated that there are 24 occurrences rangewide (RARECAT 2024, GBIF 2025, iNaturalist 2025, NatureServe 2025, SEINet 2025).
Threat Impact Comments
Livestock grazing and off-road use are common throughout the range of this species but the plants appear to be abundant in grazed areas and near trails in favorable years (NatureServe 2025, iNaturalist 2025, RARECAT 2025). Low-elevation areas in western Nevada are at high risk for wildfire and cheatgrass invasion (USGS 2025).
Ecology & Habitat

Habitat

This species is usually found in vernally wet areas, on gravel, sandy, or clay soils, and it can somewhat tolerate alkali soils at elevations ranging from 1,200 to 1,700 meters (Wagner, 2022).
Other Nations (1)
United StatesN3
ProvinceRankNative
NevadaS3Yes
Threat Assessments
ThreatScopeSeverityTiming
2 - Agriculture & aquacultureLarge (31-70%)Slight or 1-10% pop. declineHigh (continuing)
2.3 - Livestock farming & ranchingLarge (31-70%)Slight or 1-10% pop. declineHigh (continuing)
6 - Human intrusions & disturbanceRestricted (11-30%)UnknownHigh (continuing)
6.1 - Recreational activitiesRestricted (11-30%)UnknownHigh (continuing)
7 - Natural system modificationsPervasive (71-100%)Moderate or 11-30% pop. declineModerate (short-term)
7.1 - Fire & fire suppressionPervasive (71-100%)Moderate or 11-30% pop. declineModerate (short-term)
8 - Invasive & other problematic species, genes & diseasesPervasive (71-100%)Moderate or 11-30% pop. declineHigh (continuing)
8.1 - Invasive non-native/alien species/diseasesPervasive (71-100%)Moderate or 11-30% pop. declineHigh (continuing)
8.1.2 - Named speciesPervasive (71-100%)Moderate or 11-30% pop. declineHigh (continuing)

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Plant Characteristics
DurationANNUAL
Economic Value (Genus)No
Roadless Areas (4)
Nevada (4)
AreaForestAcres
Chineese Camp (NV)Humboldt-Toiyabe National Forest15,207
Pine Grove SouthHumboldt-Toiyabe National Forest88,945
Rough CreekHumboldt-Toiyabe National Forest8,476
West Walker (NV)Humboldt-Toiyabe National Forest5,683
References (13)
  1. Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, P.K. Holmgren. 1997. Intermountain Flora, Volume 3, Part A Subclass Rosidae (except Fabales). The New York Botanical Gardens. Bronx, New York. 446 pp.
  2. Flora of North America Editorial Committee (FNA). 2021. Flora of North America north of Mexico. Vol. 10. Magnoliophyta: Proteaceae to Elaeagnaceae. Oxford Univ. Press, New York. xxiv + 456 pp.
  3. Global Biodiversity Information Facility (GBIF). 2025. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2025).
  4. iNaturalist. 2025. Online. Available: https://www.inaturalist.org (accessed 2025).
  5. Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.
  6. Kartesz, 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.
  7. Mozingo, H.N., and M. Williams. 1980. The threatened and endangered plants of Nevada. U.S. Fish and Wildlife Service and Bureau of Land Management, Portland, OR. 268 pp.
  8. NatureServe. 2025. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  9. NatureServe's Rapid Analysis of Rarity and Endangerment Conservation Assessment Tool (RARECAT). 2024. Version: 1.1.1 (released Oct 01, 2024).
  10. Nevada Natural Heritage Program. 1999. February 19-last update. List of sensitive plants. Online. Available: http://www.state.nv.us/nvnhp/sensplnt.htm. Accessed 1999, June 3.
  11. Southwest Environmental Information Network (SEINet). 2025. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2025).
  12. United States Geological Survey (USGS), Fort Collins Science Center. 2025. Assessing the Proliferation, Connectivity, and Consequences of Invasive Fine Fuels on the Sagebrush Biome. https://www.usgs.gov/centers/fort-collins-science-center/science/assessing-proliferation-connectivity-and-consequences-0
  13. Wagner, W.L. 2022. Flora of North America. <i>Eremothera nevadensis</i>. Accessed: September 29, 2022. http://floranorthamerica.org/Eremothera_nevadensis