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Species Details
Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium Read more about this collection »
LeavesOpposite, thin and hairless; 3-10 cm wide; 2.5-6 cm long; palmate with 3-5 lobes; taper to a point; irregular margins doubly serrate (Moss, 1983). Shiny dark green above, paler beneath (Nesom, 2006).
FlowersInflorescence 5-15 flowers; unisexual, monecious or dioecious (Moss, 1983). Greenish yellow; petals axillary flat-topped clusters; 2-5 cm long on drooping stalks (Nesom, 2006). 5 separate petals; 1 pistil; superior ovary; 2 carpels; 2 styles; 8-10 stamens (Moss, 1983).
Fruits and SeedsFruits in samaras 2-4 cm long; 2 united basally each with 1 seed (Moss, 1983); reddish when mature; long stalk; widely spread pair (Nesom, 2006).
Scientific Name
Acer glabrum Torr.
Common Name
mountain maple
General Description
A shrub or tree up to 10 m tall with young branches that are reddish-brown and older stems that are grey (Moss, 1983).
Leaves
Opposite, thin and hairless; 3-10 cm wide; 2.5-6 cm long; palmate with 3-5 lobes; taper to a point; irregular margins doubly serrate (Moss, 1983). Shiny dark green above, paler beneath (Nesom, 2006).
Flowers
Inflorescence 5-15 flowers; unisexual, monecious or dioecious (Moss, 1983). Greenish yellow; petals axillary flat-topped clusters; 2-5 cm long on drooping stalks (Nesom, 2006). 5 separate petals; 1 pistil; superior…
Inflorescence 5-15 flowers; unisexual, monecious or dioecious (Moss, 1983). Greenish yellow; petals axillary flat-topped clusters; 2-5 cm long on drooping stalks (Nesom, 2006). 5 separate petals; 1 pistil; superior ovary; 2 carpels; 2 styles; 8-10 stamens (Moss, 1983).
Fruits and Seeds
Fruits in samaras 2-4 cm long; 2 united basally each with 1 seed (Moss, 1983); reddish when mature; long stalk; widely spread pair (Nesom, 2006).
Phenology
Flowers April-June; fruits August-Sept/Oct. (Nesom, 2006).
Notes
Regeneration tied to fire (Nesom, 2006).
Range/Distribution
Alberta: SW mountain range. CAN (BC); USA (MT, WA, WY, UT) (Canadensys).
Citation
Page Citation for Acer glabrum Torr.
Page Citation
"Species Details - Acer glabrum Torr., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-5179/12-85854. Accessed 07 Jul. 2024.
Specimen Information
There are 40 specimens of this Species.
116495 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: United States, Montana, Toole County, Pratt Canyon
Date Collected1975-06-15
116496 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: United States, Montana, Liberty County, Iron Creek
Date Collected1976-05-18
12559 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Elko
Date Collected1934-08-13
61645 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: United States, Washington, Stevens County, Kettle Falls
Date Collected1939-06-14
95353 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: United States, Utah, Duchesne County, Lance Canyon
Date Collected1986-08-01
39839 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: United States, Wyoming, Bighorn Mountains
Date Collected1970-10-06
61658 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: United States, Utah, Garfield County, Bryce Canyon
Date Collected1935-07-04
25585 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Mount Robson Provincial Park, Mount Robson
Date Collected1968-08-12
24416 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Crowsnest Pass
Date Collected1955-08-04
61172 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Field
Date Collected1943-09-12
61657 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Fernie
Date Collected1942-05-07
61651 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Nelson
Date Collected1944-04-20; 1944-04-28
61650 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Nelson
Date Collected1944-04-21
61647 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Nelson
Date Collected1944-06-16
72745 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, British Columbia, Cathedral Park, Ewart Creek
Date Collected1975-07-09
61656 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, Alberta, Banff National Park, Banff
Date Collected1899-06-23
32126 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, Alberta, Waterton Lakes National Park, Bertha Lake
Date Collected1965-06-23
32125 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, Alberta, Waterton Lakes National Park, Blakiston Creek
Date Collected1965-06-21
61655 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, Alberta, Waterton Lakes National Park, Blakiston Creek
Date Collected1941-07-11
46166 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, Alberta, Waterton Lakes National Park
Date Collected1972-05-24
12555 - Acer glabrum Torr.
University of Alberta Vascular Plant Herbarium
Common Namemountain maple
Place CollectedNorth America: Canada, Alberta, Banff National Park, Sulphur Mountain
Date Collected1923-06-13