Subshrubs to 1.5 m. Stems erect, much branched, branches brown; branchlets slender, ± densely gray stellate tomentulose. Petiole 5-14 mm; leaf blade rhombic to triangular-ovate, 1.5-3(-6) × 1-2.5(-4.5) cm, papery, adaxially corrugate, sparsely pilose, abaxially ± densely gray stellate tomentulose, base subtruncate to broadly cuneate or rarely attenuate, margin crenate to dentate, apex acute to subobtuse, lateral veins 3-or 4-paired. Panicles terminal or axillary, 4-18 cm, interrupted toward base; cymes pedunculate, 3-5(-7)-flowered; floral leaves subsessile, longer than cymes basally, broadly ovate-triangular, margin crenate; upper floral leaves ca. as long as cymes, ± lanceolate, margin entire. Pedicel 2-3.5 mm. Calyx campanulate, ca. 3 mm, densely gray tomentulose; teeth narrowly lanceolate, ca. 1/2 as long as calyx, apex filiform-acuminate; fruiting calyx broadly campanulate, dilated to 5 mm, subglabrous. Corolla purplish, 5-6 mm, densely pilose, sparsely glandular, tube ca. 3 mm. Stamens and style included or slightly exserted. Nutlets yellow-brown, ovoid, ca. 1.5 mm, glabrous. Fl. Jul-Sep, fr. Sep-Oct.
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