S. Wats.
Identity
Unique IDELEMENT_GLOBAL.2.133849
Element CodePDPGN08380
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPolygonales
FamilyPolygonaceae
GenusEriogonum
Other Common NamesJones' 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.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2021-10-29
Change Date2021-10-29
Edition Date2021-10-29
Edition AuthorsBroaddus, L., rev. J. Beckman (1996), rev. C. Nordman (2021).
Threat ImpactHigh - medium
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences21 - 80
Rank ReasonsJones' Buckwheat is endemic to the Mojave Desert of northwestern Arizona. It occurs only in Coconino, Mohave, and western Navajo counties, in woody shrubland to woodland habitats. It has a range extent of about 45,000 square kilometers, but the number of plants is not well documented. It occurs mostly on federal conservation lands (BLM, NPS, and USDA Forest Service). It is threatened by invasive exotic plants, especially red brome (Bromus rubens).
Range Extent CommentsJones' Buckwheat only occurs in the southwestern United States, in northern Arizona. It occurs in the Mojave Desert of Coconino County, Mohave County and western Navajo County, Arizona. It has a range extent of about 45,000 square kilometers (Arizona Game and Fish Department 2020, Embrey et al. 2012, Flora of North America Editorial Committee 2005, Kearney and Peebles 1951, SEINet 2021). Despite surveys in southern Nevada, no Jones' Buckwheat plants have been found (Arizona Game and Fish Department 2020).
Occurrences CommentsThere are estimated to be more than 50 locations of Jones' Buckwheat (Embrey et al. 2012, SEINet 2021).
Threat Impact CommentsThe potential threats to Jones' Buckwheat include cattle, direct impacts and dust from off road vehicles, increased fire intensity, and non-native invasive plants, most notably red brome (Bromus rubens). Red brome is a winter annual grass, which can increase in response to wildland fire. Signs of cattle were present at about 25% of newly documented Jones' Buckwheat sites, but visible damage to plants was minimal (Embrey et al. 2012).