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Home/Species/ Ripley's Buckwheat

Eriogonum ripleyi

J.T. Howell

Ripley's Buckwheat

G2Imperiled Found in 2 roadless areas NatureServe Explorer →
G2ImperiledGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.135003
Element CodePDPGN08520
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPolygonales
FamilyPolygonaceae
GenusEriogonum
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.
Taxonomic Comments
A distinct species in a genus of about 250-300 species mainly in western North America.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2014-11-05
Change Date1990-05-30
Edition Date2014-11-05
Edition AuthorsOliver, L.
Range Extent250-5000 square km (about 100-2000 square miles)
Number of Occurrences1 - 5
Rank Reasons
Known from 5 widely separated localities in Arizona and threatened by off-road vehicles, road construction, and grazing. It is restricted to calcareous chalky, gravel silt, gypsum and tertiary lake substrates.
Range Extent Comments
Found in Coconino, Maricopa and Yavapai counties, Arizona (Morefield and Schaack, 1986). Baker (2011) estimates that the range is 321 km.
Occurrences Comments
Reported from five localities: two in Coconino County, one in Maricopa County, one in Yavapai County, Arizona. Information needed on location of fifth site.
Threat Impact Comments
Livestock grazing is a threat because it degrades the habitat where this species occurs, as does construction of reservoirs, roads and recreational development. Off-road vehicle use and mining are also threats. This species is threatened by collection for the horticulture trade (AZ Game and Fish Dept. 1997). In the Prescott National Forest, off-road vehicle traffic is a primary threat (Baker 2011).
Ecology & Habitat

Habitat

On calcareous ridgetops or chalky carbonate Verde formations at 1,045 m; among pinyons at 1,830 m.
Creosote bush community of the Sonoran Desertscrub, and Pinyon-Juniper Woodland of the Great Basin Conifer Woodland (Arizona Game and Fish Department 1997).
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferDesert
Other Nations (1)
United StatesN2
ProvinceRankNative
Navajo NationSNRYes
ArizonaS2Yes
Threat Assessments
ThreatScopeSeverityTiming
2 - Agriculture & aquaculture———
2.3 - Livestock farming & ranchingUnknownUnknown—
4 - Transportation & service corridorsUnknownUnknown—
5 - Biological resource use———
5.2 - Gathering terrestrial plantsUnknownUnknown—
6 - Human intrusions & disturbance———
6.1 - Recreational activitiesUnknownUnknown—

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Plant Characteristics
Economic Value (Genus)No
Roadless Areas (2)
Arizona (2)
AreaForestAcres
Lime CreekTonto National Forest42,568
MazatzalTonto National Forest16,942
References (6)
  1. Arizona Game and Fish Department. 1997. <i>Eriogonum ripleyi</i>. Unpublished abstract compiled and edited by the Heritage Data Management System, Arizona Game and Fish Department, Phoenix, AZ. 4 pp.
  2. Baker, M. 2011a. Viability analysis for vascular plants within the Prescott National Forest, Arizona. Draft 4. Prepared for the U.S. Forest Service. 108 pp.  Accessed online on Nov. 5, 2014 at: http://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5385336.pdf
  3. 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.
  4. Kearney, T.H., R.H. Peebles, and collaborators. 1951. Arizona flora. 2nd edition with Supplement (1960) by J.T. Howell, E. McClintock, and collaborators. Univ. California Press, Berkeley. 1085 pp.
  5. Morefield, J.D., and C.G. Schaack. 1986. Noteworthy collections: Eriogonum ripleyi. Madrono 33(2): 149.
  6. Rutman, S. 1992. Handbook of Arizona's endangered, threatened, and candidate plants. U.S. Fish and Wildlife Service, Phoenix, Arizona.