Scientific Name: Acer grandidentatum
Common Names: Bigtooth Maple, Canyon Maple, Big-toothed Maple, Uvalde Big-tooth Maple, Western Sugar Maple
Duration: Perennial, Deciduous
Growth Habit: Tree, Shrub
Arizona Native Status: Native
Habitat: Mountain. This plant grows in sunny to partly shady mountain canyons in pine-oak or coniferous forests. It is easy to spot in the autumn when it has its colorful fall foliage.
Flower Color: Inconspicuous (yellowish green). It blooms as the leaves emerge.
Flowering Season: Spring
Height: Up to 50 feet (15 m) tall
Description: The petalless, wind-pollinated flowers are in drooping bunches and have long stalks and yellow-green, cuplike perianths. The female flowers are followed by green drying to tan, u-shaped, winged seed pairs known as double samaras that can "helicopter" through the air to aid in dispersal. The leaves have reddish stalks, heart-shaped leaf bases, and are green above, fuzzy pale green below, rounded in outline, and palmately lobed with 3 or sometimes 5 main lobes that have a few irregular large teeth or small lobes. In the autumn, the leaves turn bright yellow, orange, or red before they fall, and because they are somewhat translucent, the autumn leaves appear especially colorful when sunlight shines through them. The young twigs are brown. The bark is gray-brown and smooth to scaly. The trunk is erect to leaning. This plant's size depends on available moisture, and it is a tree in moist canyon bottoms and a large shrub on drier canyon slopes.
The similar Rocky Mountain Maple (Acer glabrum) is a smaller tree and has sometimes trifoliate leaves with more numerous, much smaller, sharply pointed teeth.
Allergenic – The flower pollen is a moderate allergen.
Edible – The sweet sap can be tapped to make maple syrup.
Kingdom: Plantae – Plants
Subkingdom: Tracheobionta – Vascular plants
Superdivision: Spermatophyta – Seed plants
Division: Magnoliophyta – Flowering plants
Class: Magnoliopsida – Dicotyledons
Family: Aceraceae – Maple family
Genus: Acer L. – maple
Species: Acer grandidentatum Nutt. – bigtooth maple
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