AfricanMonitor.com

Acer rubrum
Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology.
www.fs.fed.us/

Acer negundo (Boxelder)
Images of entire tree, bark, twig, leaf, flower, and fruit.
www.cas.vanderbilt.edu/

Acer negundo (Boxelder)
Photos plus brief description of physical features.
www.duke.edu/

Acer negundo (Boxelder)
Physical characteristics of leaf, flower, fruit, twig, and bark. Includes images.
www.cnr.vt.edu/

Acer negundo (Boxelder)
Detailed facts on native range, supporting soils and topography, associated cover, reproduction, and growth. Provides distribution map.
www.na.fs.fed.us/

Acer negundo
Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology.
www.fs.fed.us/

Acer macrophyllum (Bigleaf Maple)
Detailed facts on native range, supporting soils and topography, associated cover, reproduction and growth, and human uses.
www.na.fs.fed.us/

Acer macrophyllum (Bigleaf Maple)
Describes the habitat and physical characteristics of this species. Includes photos of entire tree, leaves, fruit, and bark.
www.for.gov.bc.ca/

Acer macrophyllum (Bigleaf Maple)
Describes physical features and provides photos of mature tree, leaf, fruit, twig, flower, and bark.
www.cnr.vt.edu/

Acer macrophyllum: Big Leaf Maple
Species description and photo by Central Washington Native Plants.
www.cwnp.org/