Acer grandidentatum

Bigtooth maple (specifically subspecies A. grandidentatum ssp. grandidentatum) is in the soapberry or Sapindaceae family and is native to western North America, being found in scattered populations from western Montana to northern Mexico. It is a small deciduous tree growing to a height of about 15 m.

It is closely related to sugar maple (Acer saccharum), and is treated as a subspecies of it by some botanists, as Acer saccharum subsp. grandidentatum.

• Leaves are opposite, simple, 6–12 cm long and broad, with 3–5 deep, bluntly-pointed lobes (3 large and 2 small); the major lobes each have 3–5 small subsidiary lobes. Leaves turn yellow to bright red in the fall (reddest in the colder climates).
• Flowers appear with the leaves in mid-spring, in corymbs of 5–15, each flower yellow-green and 4–5 mm in diameter, no petals.
• Fruit is a double samara (2 winged seeds joined at the base), green to reddish-pink in colour, maturing to brown in the fall. Each seed is globose, 7–10 mm in diameter, with a single wing 2–3 cm long.