Plants 0.3-2.6 m. Stems: branches red-brown or yellow-brown, not or weakly glaucous, glabrous or pilose at nodes; branchlets yellow-green, red-brown, or brownish, pilose. Leaves: stipules foliaceous, apex convex or rounded; petiole convex to flat, or shallowly grooved adaxially, 2-7.5 mm, villous or pubescent to glabrescent adaxially; largest medial blade (sometimes amphistomatous), elliptic or broadly elliptic, 20-50 × 10-31 mm, 1.6-2-2.8(-3.6) times as long as wide, base convex, rounded, or cordate, margins flat, serrulate or entire, apex acute, convex, or acuminate, abaxial surface not glaucous, pilose or glabrous, hairs wavy, adaxial slightly glossy, pilose or glabrous; proximal blade margins entire, serrulate, or crenulate; juvenile blade green, glabrous or pilose abaxially, hairs white. Catkins flowering as leaves emerge; staminate stout, subglobose, or globose, 7-17 × 6-10 mm, flowering branchlet 1-3 mm; pistillate densely or moderately densely flowered, stout or subglobose, 12-38 × 6-12 mm, flowering branchlet 1.5-10 mm; floral bract brown, black, or bicolor, 1-2 mm, apex acute or convex, abaxially hairy, hairs wavy. Staminate flowers: adaxial nectary narrowly oblong to oblong, 0.4-0.8 mm; filaments distinct, glabrous; anthers purple turning yellow, 0.4-0.6 mm. Pistillate flowers: adaxial nectary narrowly oblong to oblong, 0.4-1 mm, shorter to longer than stipe; stipe 0.2-1 mm; ovary pyriform, glabrous, beak gradually tapering to or slightly bulged below styles; ovules 8-12 per ovary; styles 0.5-1.2 mm; stigmas broadly cylin-drical, 0.14-0.21-0.36 mm. Capsules 3.2-4.5 mm. 2n = 38.
Home