Trees, to 25 m tall, d.b.h. to 100 cm, deciduous. Crown broadly orbicular. Bark gray to grayish brown, ± smooth, exfoliating into irregular scale-like flakes. Branchlets dark brown, densely pubescent when young, never winged. Winter buds reddish brown, ovoid-orbicular, glabrous. Petiole 2-6 mm, pubescent; leaf blade lanceolate-ovate to narrowly elliptic, lamina on two sides of midvein unequal in length and width, 2.5-5 × 1-2 cm, thick, abaxially pea green and pubescent when young, adaxially dark green, lustrous, and pubescent only on midvein, base oblique, margin obtusely and irregularly simply serrate, apex acute to obtuse; midvein depressed; secondary veins 10-15 on each side of midvein. Inflorescences fascicled cymes, 3-6-flowered. Pedicel very short, pubescent. Perianth funnelform; tepals 4. Samaras tan to brown, occasionally dark red-brown, elliptic to ovate-elliptic, 10-13 × 6-8 mm, glabrous except for pubescence on stigmatic surface in notch; stalk 1-3 mm, shorter than perianth, sparsely pubescent; perianth persistent or tardily deciduous. Seed at center or toward apex of samara. Fl. and fr. Aug-Oct. 2n = 28.
Trees , 25 m; crowns rounded, open. Bark olive green to gray, shedding in irregular, tan to orange plates. Branches long-pendulous, not winged; twigs tan to dark brown, glabrous to pubescent. Buds acute to obtuse; scales brown, pubescent. Leaves: petiole 2-6(-8) mm, glabrous or sparsely pubescent with short hairs. Leaf blade elliptic to ovate-obovate, (3.5-)4-5(-6) × 1.5-2.5 cm, base oblique, margins mostly singly serrate (some doubly serrate), apex acute; surfaces abaxially pale, glabrate, adaxially dark green, lustrous, glabrous; lateral veins forking 5 or more times per side. Inflorescences fascicles, (2-)3-4(-8)-flowered; pedicel 8-10 mm. Flowers: calyx reddish brown, deeply lobed, lobes (3-)4-5, glabrous; stamens 3-4; anthers reddish; stigma lobes white-pubescent, exserted, recurved and spreading with maturity. Samaras green to light brown, elliptic to ovate, ca. 1 cm, not winged, seeds nearly filling samara, notched at apex, glabrous. Seeds thickened, not inflated. 2 n = 28.
Medium-sized tree. Branchlets thinly pubescent. Leaves small, 25-80 mm long, elliptic to ovate, leathery and glossy green.
Medium-sized tree, up to 6 m high. Stems with branchlets thinly pubescent, branches without spines. Leaves petiolate; blade elliptic to ovate, small, 25-45 x 10-20 mm long, base asymmetric, apex acute, margins serrate, leathery, glossy green on upper surface, prominently veined on lower surface, glabrous; stipules present, falling early. Flowers: inconspicuous; Mar. Fruit a flattened samara with membranous wings.
|Chinese elm, lacebark elm|