Erect herb, to 2 m. Stem, branches, and inflorescence axis densely covered with yellowish brown long, simple and short, stellate hairs. Leaves chartaceous, elliptic or ovate-elliptic, 8-20(-25) by 6-13(-14)cm, acute or shortly acuminate, base broadly acute or subrounded; margin denticulate; long, appressed hairs above, ciliate, velutinous beneath, dense stellate hairs on the midrib and nerves; petiole 1-5(-7) cm, densely covered with brown hairs. Verticillasters 6-8-flowered, forming an axillary spurious racemose inflorescence 6-7 (-10) cm long excluding the peduncle. Bracts narrowly lanceolate, 6-8 mm, caducous. Pedicels 1.5-2 mm. Calyx tubular, 10-12 mm long, densely stellate-pubescent, teeth lanceolate, acuminate, 3-4 mm long. Corolla tubular, slender, white, 18-20 mm long, puberulent outside. Stamens epicorolline, free portion 4 mm long, ciliate. Ovary glabrous. Nutlet, usually only one developed, globose.
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