Herbs 2-3 m tall. Branchlets gray-green, sparsely pubescent. Petiole 4-5 cm, densely rust colored pubescent; leaf blade elliptic, ca. 27 X 18 cm, 6-8 X 4-4.5 cm just below inflorescences, papery, abaxially densely pilose along veins, adaxially many-celled pilose, base broadly cuneate to subrounded, margin mucroserrulate and ciliate; veins 6-8 pairs, abaxially prominent. Inflorescences terminal, corymbose cymes, densely purplish red jointed glandular pubescent; bracts lanceolate, ca. 1.5 3 cm. Calyx ca. 1.3 cm, deeply 5-lobed; lobes linear-lanceolate, ca. 1 cm. Corolla purple, tube 1-2 cm; lobes elliptic, much shorter than tube, acute. Filaments compressed, glabrous. Ovary glabrous. Style shorter than stamens. Fl. and fr. Aug.
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