species Acer rubrum L. 28728 Carolina red maple eastern red maple red maple scarlet maple perennial woody tree n/a 5 15 35 40 autotrophic not carnivorous aerial stem continuous green red unknown unknown unknown unknown glabrate glabrous unknown smooth glabrous U-shaped V-shaped 3 3 3 3 absent n/a absent n/a furrowed plated ridged smooth axillary collateral terminal absent red 2 3 3 4 globose ovoid blunt imbricate glabrous pubescent ciliate smooth deciduous simple petiolate cauline decussate opposite spreading 3 5 15 15 3 6 15 18 obovate orbiculate ovate deeply lobed doubly serrate moderately lobed plane serrate shallowly lobed acuminate acute cordate cuneate obtuse rounded truncate two-sided n/a n/a n/a n/a green green silver white absent absent glabrate glabrous unknown glandular glabrate pubescent pilose tomentose glaucous palmate n/a n/a n/a n/a relatively planar unlobed palmate 1 3 5 9 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 3 5 10 10 glabrate glabrous pubescent puberulent n/a n/a n/a absent present unknown unknown unknown unknown caducous unknown January February March April axillary fascicle simple umbel stalked bisexual pistillate staminate unisexual unknown n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a radially symmetric aposepalous 5 5 5 5 n/a n/a n/a n/a n/a n/a n/a n/a 1 1 3 3 unknown unknown unknown unknown ascending red yellow oblong unknown obtuse unknown unknown caducous radially symmetric apopetalous 5 5 5 5 unknown n/a n/a n/a n/a n/a n/a n/a n/a 0.5 1 3 3 unknown unknown unknown unknown ascending red yellow linear oblong unknown unknown unknown caducous 5 5 8 8 unknown separate unknown unknown unknown unknown 1.5 1.5 2 2 absent superior 1 1 1 1 syncarpous 2 2 2 2 2 2 2 2 unknown unknown unknown unknown unknown unknown unknown unknown 2 2 4 4 axile unknown absent unknown n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a mericarp samara schizocarp 1 1.5 4 5 brown green red reddish-brown yellow yellow-green 1 1 1 1 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a bogs and seepages bottomland forests disturbed and weedy areas dry-mesic upland forests mesic upland forests mixed forest edges rock outcrops suburban plantings dioecious monoecious polygamous absent fibrous