Roadless Areas
Home/Species/ Silver-haired Ivesia

Ivesia argyrocoma

(Rydb.) Rydb.

Silver-haired Ivesia

G2Imperiled Found in 2 roadless areas NatureServe Explorer →
G2ImperiledGlobal Rank
HighThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.153764
Element CodePDROS0X020
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderRosales
FamilyRosaceae
GenusIvesia
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 MethodLegacy Rank calculation - Excel v3.1x
Review Date2013-05-06
Change Date1989-05-02
Edition Date2013-05-06
Edition AuthorsD. Gries, A. Treher (2013)
Threat ImpactHigh
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Ivesia argyrocoma is known from two disjunct populations, one in San Bernardino County, California, and one in Baja California, Mexico. Its range is extremely narrow, in the San Bernardino Mountains. Threats include development, grazing and vehicle use.
Range Extent Comments
Ivesia argyrocoma is known from two disjunct populations, one in San Bernardino County, California, and one in Baja California. Its range is extremely narrow, in the San Bernardino Mountains.
Threat Impact Comments
Threats include development, grazing, foot traffic, mining, non-native species, recreational activities, road construction, road maintenance, vehicles, and possibly logging (CNPS 2013).
Ecology & Habitat

Habitat

In dry alkaline meadows, decomposed granite soil, and pebble plain habitats (areas of dense clay soils armored by a lag gravel of quartzite pebbles that form openings of low cover and are dominated by herbaceous, cushion-forming species) within Yellow Pine Forest, Red Fir Forest, and Montane Coniferous Forest communities. 1500 - 2900 m.
Terrestrial Habitats
Forest/WoodlandForest - ConiferGrassland/herbaceousBarrens
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaSNRYes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (2)
California (2)
AreaForestAcres
Granite PeakSan Bernardino National Forest450
SugarloafSan Bernardino National Forest8,206
References (8)
  1. CalFlora. 2005. Information on California plants for education, research and conservation. Berkeley, California: The CalFlora Database [web application]. Available: http://www.calflora.org/. (Accessed 2005)
  2. California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
  3. Flora of North America Editorial Committee (FNA). 2014b. Flora of North America north of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 pp.
  4. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  5. 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.
  6. Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.
  7. Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.
  8. Wiggins, I.L. 1980. Flora of Baja California. Stanford Univ. Press, Stanford, California. 1025 pp.