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Packera hesperia

(Greene) W.A. Weber & A. Love

Western Ragwort

G3Vulnerable Found in 2 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.151426
Element CodePDAST8H1L0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusPackera
Synonyms
Senecio hesperiusGreene
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
Review Date2007-04-27
Change Date1996-09-09
Edition Date1996-09-09
Edition Authorsrev. D. Gries (1997)
Number of Occurrences21 - 80
Rank Reasons
Endemic to serpentine soils in southwestern Oregon and adjacent California, Packera hesperia (=Senecio hesperius) is known from at least 45 extant occurrences. Threats are potential mining, grazing, and logging.
Range Extent Comments
Illinois River Valley in southern Josephine County, Oregon.
Occurrences Comments
45 extant populations in Oregon.
Threat Impact Comments
Primarily potential mining of the serpentine habitat, while grazing and logging present problems of a lesser magnitude.
Ecology & Habitat

Habitat

Serpentine grasslands and open Jeffrey pine savanna and open serpentine chapparal (Ceanothus cuneatus and Arctostaphylos viscida). 1200-4000 feet.
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS1Yes
OregonS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (2)
Oregon (2)
AreaForestAcres
North KalmiopsisSiskiyou National Forests91,560
South KalmiopsisSiskiyou National Forests104,477
References (5)
  1. Flora of North America Editorial Committee (FNA). 2006b. Flora of North America north of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 pp.
  2. 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.
  3. Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
  4. Meinke, R.J. 1982. Threatened and Endangered Vascular Plants of Oregon: An Illustrated Guide. U.S. Fish and Wildlife Service, Region 1, Portland, Oregon. 326 pp.
  5. Peck, M.E. 1961. A manual of the higher plants of Oregon. 2nd edition. Binsford & Mort, Portland, Oregon. 936 pp.