Shantung maple Aceraceae Acer truncatum Bunge. Listen to the Latin   symbol: --
Other Fact Sheets
Leaf: Opposite, simple, overall shape a half circle, 3 to 6 inches wide, usually 5 v-shaped lobes (may resemble a sweetgum leaf) with entire margins, usually with a truncate leaf base, exudes milky white sap from the petiole when detached, green above and below. Subspecies mono has shallower sinuses, giving it a boxey look.
Flower: Yellow to green, to 1/2 inch (large for a maple), clustered in 3 inch flower heads, appearing in spring.
Fruit: Two-winged pair of samaras about 1 inch long, forming a broad U shape or tight V shape, oval seed cavity, matures in early fall.
Twig: Reddish brown to grayish brown (some with a purple tint), buds plump and green to purplish brown, somewhat elongated.
Bark: Variable, but generally grayish brown or with a purple tint, young bark warty; older trees may be somewhat furrowed, with short, thick, irregular curling-outward ridges.
Form: A small tree with a round crown, commonly to 25 feet (subsp. mono to 40 feet and more, spreading). 

Acer truncatum is planted in the highlighted USDA hardiness zones to the left and is not known to widely escape cultivaton.

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