Missouri is at the edge of this subspecies' US range. It is uncommon, occurring in southern and central Missouri. Bark is beechlike: light gray, smooth, becoming shallowly furrowed or with scaly ridges with age. saccharum floridanum) has rather small leaves (1¼ to 4 inches long), and lobes with blunt to rounded tips. Some botanists have considered black maple a distinct species, Acer nigrum. Compared to sugar maple, it is more tolerant of heat and drought it is scattered in northern Missouri, uncommon south of the Missouri River. Leaf stems abruptly enlarged at the base. saccharum nigrum) is named for its dark gray or black bark leaf undersides yellowish green to green uppersides rather dull the sinuses between main lobes are wide or comparatively shallow, forming angles greater than 90 degrees, mostly 3-lobed. Missouri has three other subspecies of sugar maple, too. The description above refers to sugar maple's nominate subspecies, Acer saccharum saccharum. Twigs are slender, shiny, smooth, green at first, reddish-brown later pores conspicuous, pale bud tips sharp-pointed.įlowers April–May, with male and female flowers commonly on the same tree (sometimes on separate trees), borne on long, hairy, drooping stalks, appearing as the leaves are expanding.įruit matures August–October, reddish brown, samaras (winged fruits) usually in pairs, each wing ¾–1½ inches long. Leaves are opposite, simple, 3–6 inches long, triangular overall, sometimes wider than long, usually 5-lobed but sometimes 3-lobed lobes tapered to sharply pointed tips, sides of lobes often with secondary lobes or teeth sinuses between main lobes U-shaped and forming angles less than 90 degrees upper surface dark green lower surface pale green, bluish or grayish green, or whitish, smooth except for tufts of hairs at the vein axils.īark is smooth and gray on young trees, later darker with grooves and irregular scaly plates. Sugar maple is a medium to large tree with a large, round crown.
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