Identity
Unique IDELEMENT_GLOBAL.2.159627
Element CodePDPGN086M0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPolygonales
FamilyPolygonaceae
GenusEriogonum
Other Common NamesLewis' buckwheat (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 CommentsAccepted as a species by Kartesz (floristic synthesis, 1999), following recommendation of Jim Reveal. Flora of North America (2005) includes E.lewisii as a synonym of Eriogonum desertorum.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2020-10-05
Change Date2020-10-05
Edition Date2020-10-05
Edition AuthorsMorefield, J. D. (1997), rev. D. Gries (1997), rev. J. Morefield (NVHP, 5/01), rev. Treher (2020)
Threat ImpactMedium
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences6 - 20
Rank ReasonsEriogonum lewisii is known only from Elko and Eureka Counties in northeastern Nevada. There are 20 occurrences separated by at least 1 km, with about 665,000 individual plants when population size was last estimated. Threats to this species include mining, off-road vehicles and road maintenance activities, livestock, and fire suppression. Some declines are likely to have occurred rangewide.
Range Extent CommentsEriogonum lewisii is endemic to Nevada and found in north-central Elko County and northern Eureka County in the Bull Run, Independence, and Tuscarora Mountains and the Jarbidge Mountains complex.
Threat Impact CommentsThreats to this species include mineral exploration and development, development and maintenance of roads and electronic sites, off-road vehicle travel, trampling by livestock or feral animals, and fire and fire suppression activities. Most sites have sustained some level of impacts. Four occurrences were immediately adjacent to an expanding open-pit gold mining operation in 1996.