"Similar to no. 2 [Acer saccharum Marshall], and not always sharply distinct; bark darker, thicker, more deeply furrowed; lvs darker and duller above, usually pubescent beneath, commonly with somewhat drooping sides and tip, 5-lobed as in no. 2 or often the lowermost lobes reduced or obsolete, the lobes generally with fewer and shorter, often obtuse or rounded teeth, the central lobe tending to taper from the base. Typically in somewhat moister sites than no. 2, often along streams; s. Que. to s. Minn., s. to L.I., N.J., Del., w. Va., w. N.C., Tenn., and n. Ark., commonest in the midwest. (A. saccharum var. nigrum and var. viride; Saccharodendron n.) Plants intermediate toward no. 4 [Acer barbatum Michx.], occurring chiefly in the s. Appalachians, have been called A. leucoderme Small."