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Montana Field Guides

Western Meadowrue - Thalictrum occidentale

Native Species

Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

External Links






 
General Description
Plants dioecious. Stems 20-80 cm. Leaves mostly claudine, 3–4 times ternate; ultimate leaflets 10-35 mm long, 3- to 5-lobed, glaucous and gladular beneath. Inflorescence a terminal, leafy bracteate panicle. Flowers with white to purplish sepals 2-6 mm long; anthers ca. 3 mm, shorter than mature filaments. Fruits 6 to 9, spreading to reflexed achenes, the body 5-8 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Year-round
 


Range Comments
AK to SK, south to Ca, UT, CO (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3378

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Ament, R.J. 1995. Pioneer Plant Communities Five Years After the 1988 Yellowstone Fires. M.Sc. Thesis. Bozeman, MT: Montana State University. 216 p.
    • Buchanan, B.A. 1972. Ecological effects of weather modification, Bridger Range area, Montana: relationship of soil, vegetation, and microclimate. Ph.D. Dissertation. Montana State University, Bozeman. 130 p.
    • Clark, D. 1991. The effect of fire on Yellowstone ecosystem seed banks. M.Sc. Thesis. Montana State University, Bozeman. 115 pp.
    • Conrad, C.C. 1979. Characteristics of Pocket Gopher populations in relation to selected environmental factors in Pelican Valley, Yellowstone National Park. M.Sc. Thesis. Bozeman, Montana: Montana State University. 79 p.
    • Cramer, P.C. 1992. Small mammal diversity and abundance in Douglas Fir old growth forests. M.Sc. Thesis. Bozeman, MT: Montana State University. 64 p.
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Harvey, S.J. 1990. Responses of steppe plants to gradients of water soil texture and disturbance in Montana, U.S.A. Ph.D. Thesis. Bozeman, MT: Montana State University. 34 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Joslin, G.J. 1975. Behavior and environmental selection by Elk (Cervus canadensis nelsoni) during surrmer and fall in the First and Second Yellow Mule drainages, Madison County, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University, Bozeman. 65 p.
    • King, C. R. 1953. The Ranunculaceae of Montana. M.S. Thesis, Bozeman, MT: Montana State College. 82 p.
    • Martin, S.A. 1985. Ecology of the Rock Creek bighorn sheep herd, Beartooth Mountains, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 152 p.
    • Martinka, R.R. 1970. Structural characteristics and ecological relationships of male blue grouse (Dendragapus obscurus (Say)) territories in southwestern Montana. Ph.D Dissertation. Bozeman, MT: Montana State University. 73 p.
    • Morgan, J.T. 1993. Summer habitat use of white-tailed deer on the Tally Lake ranger district, Flathead National Forest. Ph.D. Dissertation. Montana State University, Bozeman. pp. 103.
    • Pac, D.F. 1976. Distribution, movements, and habitat use during spring, summer, and fall by mule deer associated with Armstrong winter range, Bridger Mountains, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 121 p.
    • Plaggemeyer, J.B. 1995. Effects of overstory thinning on lodgepole pine understories. M.Sc. Thesis. Bozeman, MT: Montana State University. 55 p.
    • Podruzny, S.R. 1999. Grizzly bear use of whitebark pine habitats in the Washburn Range. M.Sc. Thesis. Bozeman, MT: Montana State University. 60 p.
    • Simanonok, M. 2018. Plant-pollinator network assembly after wildfire. Ph.D. Dissertation. Bozeman, MT: Montana State University. 123 p.
    • Simanonok, M.P. and L.A. Burkle. 2019. Nesting success of wood-cavity-nesting bees declines with increasing time since wildfire. Ecology and Evolution 9:12436-12445.
    • Steerey, W. F. 1979. Distribution, range use and population characteristics of Mule Deer associated with the Schafer Creek winter range, Bridger Mountains, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 119 p.
    • Williams, K.L. 2012. Classification of the grasslands, shrublands, woodlands, forests and alpine vegetation associations of the Custer National Forest portion of the Beartooth Mountains in southcentral Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 376 p.
    • Wood, A.K. 1987. Ecology of a prairie mule deer population. Ph.D. Dissertation. Bozeman, MT: Montana State University. 205 p.
    • Wood, M.A. 1981. Small mammal communities after two recent fires in Yellowstone National Park. M.Sc. Thesis. Bozeman, Montana: Montana State University. 58 p.
  • Web Search Engines for Articles on "Western Meadowrue"
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Citation for data on this website:
Western Meadowrue — Thalictrum occidentale.  Montana Field Guide.  .  Retrieved on , from