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Eight-petal Mountain-avens - Dryas hookeriana
Other Names:
Dryas octopetala, Dryas octopetala var. hookeriana, Dryas octopetala ssp. hookeriana, Dryas octopetala var. angustifolia
Native Species
Global Rank:
G5
State Rank:
S5
C-value:
5
Agency Status
USFWS:
USFS:
BLM:
External Links
General Description
Leaf blades lanceolate, 8–25 mm, crenate the entire length. Scapes 1–6 cm high. Flowers erect; calyx lobes 5–8 mm long; petals white, elliptic, 10–15 mm long, spreading. Achenes ca. 3 mm long; styles 15–25 mm long (Juz.) Hulten (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Species Range
Montana Range
Range Descriptions
Native
Range Comments
Circumpolar south to OR, ID and 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: 275
(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
Stony soil of exposed slopes, fellfields, moist turf; alpine, less common subalpine (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
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?
Aho, Ken Andrew. 2006. Alpine and Cliff Ecosystems in the North-Central Rocky Mountains. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 343 p.- Barge, E.G. 2015. Systematics of Lactarius in the Rocky Mountain alpine zone. M.Sc. Thesis. Bozeman, MT: Montana State University. 223 p.
- Barge, E.G., C. Cripps and T.W. Osmundson. 2016. Systematics of the ectomycorrhizal genus Lactarius in the Rocky Mountain alpine zone. Mycologia, 108(2), 2016, pp. 414–440. DOI: 10.3852/15-177
- Clark, D. 1991. The effect of fire on Yellowstone ecosystem seed banks. M.Sc. Thesis. Montana State University, Bozeman. 115 pp.
- Cripps, C.L., U. Eberhardt, N. Schutz, H.J. Beker, V.S. Evenson, and E. Horak. 2019. The genus Hebeloma in the Rocky Mountain alpine zone. MycoKeys 46: 1-54. https://doi.org/10.3897/mycokeys.46.32823
- Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 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.
- Noffsinger, C.R. 2020. Systematic analysis of Russula in the North American Rocky Mountain alpine zone. M.Sc. Thesis. Bozeman, MT: Montana State University. 277 p.
- Osmundson, T.W. 2003. Systematics of Rocky Mountain alpine Laccaria (basidiomycota, agaricales, tricholomataceae) and ecology of Beartooth Plateau alpine macromycetes. M.Sc. Thesis. Bozeman, MT: Montana State University. 188 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.
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