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Rocky Mountain Maple - Acer glabrum
Native Species
Global Rank:
G5
State Rank:
S5
C-value:
4
Agency Status
USFWS:
USFS:
BLM:
External Links
General Description
Large monoecious or dioecious, shrubs or small trees up to 15 m. Twigs glabrous, red to purple. Leaves ovate-cordate, glabrous, 3–12 cm across, 3- to 5-lobed, doubly serrate; petioles red. Inflorescence a few-flowered panicle on short leafy side shoots. Flowers functionally unisexual; sepals and petals 3–4 mm long, yellowish, distinctly veined; stamens 8 to 10. Samara 2–4 cm long, the seed ca. 5 mm long (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Species Range
Montana Range
Range Descriptions
Native
Range Comments
AK to AB south to CA, NM, NE. AK to AB south to CA, NM, and NE (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations: 4364
(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
Moist, open, coniferous forest, riparian forests, avalanche slopes; valleys to lower subalpine (
Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Stewardship Responsibility
References
- Literature Cited AboveLegend:
View Online Publication
Hitchcock, C. L., A. Cronquist, M. Ownbey, and J. W. Thompson. 1961. Vascular Plants of the Pacific Northwest, Part 3. Saxifragaceae to Ericaceae. Seattle, WA and London, England: University of Washington. 614 pp.- 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?- Cope, M.G. 1992. Distribution, habitat selection and survival of transplanted Columbian Sharp-tailed Grouse (Tympanuchus phasianellus columbianus) in the Tobacco Valley, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 60 p.
- Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
- Durham, R. A., D. L. Mummey, L. Shreading, and P.W. Ramsey. 2017. Phenological patterns differ between exotic and native plants: Field observations from the Sapphire Mountains, Montana. Natural Areas Journal, 37(3), 361–381.
- Fogelsong, M.L. 1974. Effects of fluorides on Peromyscus maniculatus in Glacier National Park. M.Sc. Thesis. Bozeman, Montana: Montana State University. 52 p.
- Gaffney, W.S. 1941. The effects of winter elk browsing, South Fork of the Flathead River, Montana. Journal of Wildlife Management 5(4):427-453.
- Glazier, R.J. 1971. Ecological and morphological relationships of subspecies of Peromyscus maniculatus near St. Mary, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 41 p.
- Johnson, T. W. 1982. An analysis of pack and saddle stock grazing areas in the Bob Marshall Wilderness. M.Sc.Thesis. Bozeman, MT: Montana State University. 105 p.
- Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
- Klebenow, D.A. 1965. A montane forest winter deer habitat in western Montana. Journal of Wildlife Management 29(1):27-33.
- 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.
- Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.
- Lonner, T.N. 1972. Age distributions and some age relationships of key browse plants on big game ranges in Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 79 p.
- Lovaas, A.L. 1957. Mule deer food habits and range use in the Little Belt Mountains, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 43 p.
- Martin, P.R. 1973. Ecology of skunkbrush sumac (Rhus trilobata Nutt.) in Montana with special reference to use by mule deer. M.Sc. Thesis. Bozeman, MT: Montana State University. 97 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.
- Matlock-Cooley, S.J. 1993. Interaction between Deermice, Antelope Bitterbrush, and cattle in southwest Montana. M.Sc. Thesis. Bozeman, MT: Montana State University 84 p.
- Moore, R.L.K. 1987. Daily and seasonal activity patterns of the Pika in Southwestern Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 61 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.
- Morris, M.S. and J.E. Schwartz. 1957. Mule deer and elk food habits on the National Bison Range. Journal of Wildlife Management 21(2):189-193.
- Reichel, J.D., D.L. Genter and E. Atkinson. 1992. Sensitive animal species in the Elkhorn and Big Belt Mountains of the Helena National Forest. Unpublished report to the Helena National Forest. Montana Natural Heritage Program, Helena. 158 p.
- 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.
- Stevens, D.R. 1970. Winter ecology of moose in the Gallatin Mountains, Montana. Journal of Wildlife Management 34(1):37-46.
- Thompson, Scott K. 2002. Browse condition and trend on Montana ungulate ranges. M.Sc. Thesis. Bozeman, MT: Montana State University. 147 p.
- Tuinstra, K. E. 1967. Vegetation of the floodplains and first terraces of Rock Creek near Red Lodge, Montana. Ph.D dissertation. Montana State University, Bozeman 110 pp.
- Tyers, D.B. 2003. Winter ecology of moose on the Northern Yellowstone Winter Range. Ph.D. Dissertation. Bozeman, MT: Montana State University. 308 p.
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