Everything about Acer Grandidentatum totally explained
Acer grandidentatum (
Bigtooth Maple) is a species of
maple native to interior western
North America, occurring in scattered populations from western
Montana in the
United States south to
Coahuila in northern
Mexico. It is closely related to
Acer saccharum (Sugar Maple), and is treated as a
subspecies of it by some botanists, as
Acer saccharum subsp.
grandidentatum (Nutt.) Desmarais.
It is a small to medium-sized
deciduous tree growing to 10–15 m tall and a trunk of 20–35 cm diameter. The
bark is dark brown to gray, with narrow fissures and flat ridges creating plate-like scales; it's thin and easily damaged. The
leaves are opposite, simple, 6–12 cm long and broad, with three to five deep, bluntly-pointed lobes, three of the lobes large and two small ones (not always present) at the leaf base; the three major lobes each have 3–5 small subsidiary lobules. The leaves turn golden yellow to red in fall (this trait is less reliable in warmer areas).
The
flowers appear with the leaves in mid spring; they're produced in
corymbs of 5–15 together, each flower yellow-green, about 4–5 mm diameter, with no petals. The
fruit is a paired samara (two winged
seeds joined at the base), green to reddish-pink in color, maturing brown in early fall; each seed is globose, 7–10 mm diameter, with a single wing 2–3 cm long.
It commonly grows in
limestone soils but can adapt to a wide range of well-drained soils, from sand to clays to even white limestone areas. It prefers valleys, canyons, and the banks of mountain streams, primarily at higher elevations such as the sheltered canyons of the
Edwards Plateau in
Texas (where a population is protected in the
Lost Maples State Natural Area). Although
continental climates prevail over all of its natural range, it grows well in the
maritime climate of
Vancouver. It is slow growing when young, and doesn't have many pests.
It is occasionally planted as an ornamental tree, valued for its drought tolerance and ability to grow in rocky landscapes.
Other vernacular names occasionally used include Lost Maple, Sabinal Maple, Western Sugar Maple, Uvalde Big Tooth Maple, Canyon Maple, Southwestern Big Tooth Maple, Plateau Big Tooth Maple, Limerock Maple, Wasatch Maple and Rocky Mountain Sugar Maple.
Further Information
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