Roadless Areas
Home/Species/ Pickering's Ivesia

Ivesia pickeringii

Torr. ex Gray

Pickering's Ivesia

G2Imperiled Found in 1 roadless area NatureServe Explorer →
G2ImperiledGlobal Rank
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.132237
Element CodePDROS0X0D0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderRosales
FamilyRosaceae
GenusIvesia
Other Common Names
silky mousetail (EN) Silky Mousetail (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 MethodLegacy Rank calculation - Excel v3.1x
Review Date2013-08-07
Change Date1987-08-06
Edition Date2013-08-07
Edition AuthorsD. Gries, rev. R. Bittman; rev. R. Bittman (2013)
Threat ImpactMedium
Range Extent1000-5000 square km (about 400-2000 square miles)
Number of Occurrences6 - 20
Rank Reasons
Endemic to northwestern California, Ivesia pickeringii is known from about 11 extant occurrences in Siskiyou and Trinity counties. Threats include grazing, logging, mining and road maintenance. Klamath National Forest has set species management guidelines, however, it is not known how well occurrences are protected.
Range Extent Comments
Endemic to Siskiyou and Trinity counties, California. Estimated range extent is 800 sq mi.
Occurrences Comments
11 EO's; 4 are historic.
Threat Impact Comments
Threats listed include timber harvest, gtrazing, roads and erosion. Several EO's list no threats.
Ecology & Habitat

Habitat

Mesic to wet, sometimes rocky, areas in meadows (such as seeps, swales, and rocky ephemeral stream beds), usually on serpentine clay soils. Meadows are located within Yellow Pine Forest communities. 800 - 1500 m.
Terrestrial Habitats
Forest/WoodlandForest - ConiferGrassland/herbaceousBarrens
Palustrine Habitats
HERBACEOUS WETLANDRiparian
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaS2Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
California (1)
AreaForestAcres
Lake EleanorShasta-Trinity National Forest397
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. Nakamura, G., and J. K. Nelson, eds. 2001. Illustrated field guide to selected rare plants of northern California. University of California Agriculture and Natural Resources publication 3395, Oakland, CA. 370 pp.
  8. 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.