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Packera debilis

(Nutt.) Weber & Love

Rocky Mountain Ragwort

G4Apparently Secure Found in 1 roadless area NatureServe Explorer →
G4Apparently SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.145874
Element CodePDAST8H110
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusPackera
Synonyms
Senecio debilisNutt.
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 Date1999-05-11
Change Date1999-12-27
Edition Date1999-05-11
Edition AuthorsFayette, Kim and Susan Spackman.
Rank Reasons
There are at least 40 locations and many more are expected from Colorado, Oregon, Idaho, Wyoming, and Montana. Livestock grazing is a potential threat to this species.
Range Extent Comments
This species is found in Colorado, Idaho, Montana, Oregon, and Wyoming (Kartesz and BONAP 1998).
Occurrences Comments
There is one record for Jackson County, Colorado in North Park (Weber and Wittmann 1996). There are 16-20 locations in Wyoming (pers. comm. Walt Fertig WYNDD 1999 to Kim Fayette). This species is widespread in wet meadows over central and eastcentral Idaho (pers. comm. Michael Mancuso Idaho CDC 1999 to Kim Fayette), and is ranked an S3. It is watchlisted in Montana and there is no information for Oregon.
Threat Impact Comments
Impacts from livestock grazing can be a problem in some of these habitats (pers. comm. Michael Mancuso Idaho CDC 1999 to Kim Fayette).
Ecology & Habitat

Diagnostic Characteristics

From CNHP Wetland Guide 2012: Main Characteristics:
·Ray flowers absent, only disk flowers present
·Basal leaves with entire, toothed or crenate margins
·Found in alkaline wetlands or extreme rich fens

Habitat

This species occurs in moist or wet, usually somewhat alkaline meadows, from the valleys in middle elevations in the mountains (Cronquist et al. 1994). One record for Colorado was from alkaline soils (Weber and Wittmann 1996). Idaho records are in wet meadows (pers. comm. Michael Mancuso Idaho CDC 1999 to Kim Fayette). Wyoming NDDD reports that this species occurs in bog or fen habitats (pers. comm. Walt Fertig WYNDD 1999 to Kim Fayette).
Other Nations (1)
United StatesN4
ProvinceRankNative
MontanaS3Yes
ColoradoS2Yes
IdahoSNRYes
WyomingS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
Idaho (1)
AreaForestAcres
Italian PeakCaribou-Targhee National Forest141,158
References (8)
  1. Colorado State University Herbarium. 1999. "Colorado State University Herbarium Database". http://www.colostate.edu/Depts/Biology/Herbarium/ database.html. (May 15 1999).
  2. Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. 1984. Intermountain Flora: Vascular Plants of the Intermountain West, U.S.A. Vol. 4, Subclass Asteridae (except Asteraceae). New York Botanical Garden, Bronx. 573 pp.
  3. 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.
  4. Kartesz, J., and the Biota of North America Program (BONAP). 1998. A Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands. http://plants.usda.gov.
  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. 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.
  7. Montana Natural Heritage Program. 1999. Biological Conservation Database. http://nris.state.mt.us/mtnhp. (May 15 1999).
  8. Weber, W.A., and R.C. Wittmann. 1996a. Colorado flora: Eastern slope. Revised edition. Univ. Press of Colorado, Niwot, Colorado. 524 pp.