Shrubs (30-)50-100(-120) cm. Stems numerous, erect, brownish gray, glabrous, much branched apically; branchlets reddish, densely tomentose. Petiole 1-3.5 cm; leaf blade ovate to rhombic-ovate, 2-6 × 1.3-3 cm, membranous to papery, adaxially sparsely pilose, glandular, or subglabrous, abaxially densely gray tomentulose to subglabrous, base broadly cuneate, margin coarsely crenate-serrate, apex acute to acuminate; lateral veins 3-or 4-paired, reddish. Panicles terminal, narrow, 6-15 cm, densely pubescent; cymes pedunculate, 3-5(-7)-flowered; floral leaves gradually reduced toward apex, mostly shorter than cymes, margin remotely serrate or subentire; bracteoles subulate-linear to linear, to 1.5 mm, pubescent. Calyx campanulate, 2.5-3 mm, densely gray pubescent, glandular, conspicuously reddish, 10-veined, slightly 2-lipped; teeth ovate-triangular, ca. 1/2 as long as calyx; fruiting calyx dilated, 4-5 mm, tubular-campanulate, slightly curved. Corolla 7(-12) mm, sometimes ca. 5 mm in pistillate flowers, pubescent, glandular, tube 3.5-5 mm. Stamens exserted. Style exserted. Nutlets brownish, triquetrous, ovoid, ca. 1.3 mm, glabrous. Fl. Jul-Oct, fr. Aug-Nov.
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