Family: Salicaceae
aspen, quaking aspen, trembling aspen
[Populus aurea Tidestr., more... ]
Etymology: Populus: Latin for "poplar," derivation obscure
Plants: perennial tree 30'-40' tall with smooth, light greenish-gray bark darkening and furrowing with age; forming large clones
Leaves: dark green on top, light green below; roundish oval to kidney shaped; finely toothed
Flowers: 1"-3" long hanging catkin
Habitat: moist; upland woods, streambanks, often on burned or cut-over areas
Conservation Status: Native - potentially invasive
Plants: perennial tree 30'-40' tall with smooth, light greenish-gray bark darkening and furrowing with age; forming large clones
Leaves: dark green on top, light green below; roundish oval to kidney shaped; finely toothed
Flowers: 1"-3" long hanging catkin
Habitat: moist; upland woods, streambanks, often on burned or cut-over areas
Conservation Status: Native - potentially invasive
Dry-mesic to wet forests of oak, oak-pine, oak-red maple, sugar maple-white spruce, aspen-birch-red maple, oak-basswood, birch, oak-white spruce-balsam fir, basswood-elm-maple-oak, oak-hickory, sugar maple-basswood, sugar maple-white cedar, sugar maple-beech, elm-basswood-hickory, sugar maple-basswood-white pine, jack pine, mixed conifers; also in swamps of elm-ash or mixed conifers. Rock outcrops and cliffs, dry to wet marshes and their borders, prairies, lakeshores, pine barrens, fields, thickets, wooded Lake Michigan dunes, sedge meadows.
Like bigtooth aspen, quaking aspen is widespread across the entire state but it appears to be more common. Aspens are pioneer species, often invading areas after fires, blow downs, or other catastrophic events and they tend to associate with paper birch in these situations. Historically (circa 1800), aspen-birch forest only occupied around 4% of northern Wisconsin (Schulte et al., 2002) but it is now the second most common forest cover type in the region. This is due to historical logging and heavy management of the forest type for the forest products industry. See also P. grandidentata and P. alba.
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 2, Wetland Indicator = FAC WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin invasive species including decription, habitats, control methods USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Trees: Photos, descriptions, information USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin Virginia Tech Dept. of Forestry, College of Natural Resources: detailed description and photographs Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada" Landscape Plants of the Upper Midwest; UW-Extension: Interactive guide providing information on cultivation including: soil, zone, growth rate, landscape uses, pruning, light requirements; with photos and Latin name pronounciation