Shrubs or trees, crown rounded. Stems smooth; young twigs reddish brown, bark longitudinally fissured. Winter bud scales 1, enclosed by petiole wings, compressed, 2-5 mm, silvery-pubescent. Leaves: petiole 2-15 mm, wing 1-2 mm wide; blade ovate to widely elliptic, (3-)8-12(-15) × (2-)4-7(-8.5) cm, base broadly cuneate to rounded, margins serrulate to erose, ciliate, apex acute to acuminate, abaxial surface sparsely pubescent, primary veins in 5-7 pairs. Inflorescence bracts 1, 10-15 mm. Pedicels 0.3-0.4(-0.7) cm × 1 mm. Flowers (5-)6-10 cm diam.; sepals lanceolate, (11-)14-18 × 6-9 mm; petals 5(-8), creamy white, margins erose, abaxial surface pubescent; stamens 100-125(-150); filaments white, yellow, rose, or purple, free portion 12-18(-20) mm; anthers yellow; styles 5; stigmas unlobed. Capsules ovoid, 1.5-2.2 × 1.4-1.6 cm, apex acute, pubescent. Seeds reddish brown, winged, planoconvex, (7-)8-10 × 5-7 mm, dull, wing 0.1-1 mm wide. 2n = 30.
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Shrub to 5 m, lvs elliptic to oblong-ovate, 6–15 cm, distinctly acuminate, obscurely to conspicuously serrulate, broadly acute to rounded below, hairy beneath; fls subsessile, 7–10 cm wide; filaments purple or white; styles 5; fr ovoid, 2 cm, sharply 5-angled, pointed, villous; seeds dark, dull, flattish, thin-edged or (especially at one end) narrowly winged; 2n=30. Mt. woods; e. Ky. to n. Va. and n. Ala. June. (S. pentagyna; Malachodendron p.)
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