Isodon hispidus (Benth.) Murata

Herbs perennial. Stems repent-ascending, 33-100 cm tall, densely brownish villous. Stem leaves opposite, sessile or subsessile; leaf blade ovate to elliptic, 3-11.5 × 1.5-5.5 cm, papery, adaxially olive green, hispidous, abaxially greenish, sparsely dark brown glandular, densely patent villous on veins, base cuneate or rounded, decurrent-attenuate, margin serrate, apex acute to acuminate. Panicles terminal and axillary, 4.5-11 × 2.5-4 cm; cymes densely brownish villous; floral leaves and bracts ovate, 7-14 mm; bracteoles ovate, much shorter than pedicels. Pedicel 3-6 mm. Calyx campanulate, ca. 2 mm, ca. 2 mm wide at mouth, densely villous outside, with reddish brown glands, 2-lipped; teeth broadly triangular, ca. 1/2 as long as calyx, lower 2 slightly larger; fruiting calyx dilated, ca. 3 × 1.5-1.8 mm. Corolla white or pink-lavender, sometimes with purple spots on upper lip, 5.5-6 mm, sparsely pubescent outside; tube 3.2 mm, straight; upper lip ca. 1.5 mm, lower lip ca. 3.2 mm. Stamens and style much exserted. Nutlets compressed ovoid, minutely punctate. Fl. and fr. Oct-Nov.

Yunnan [India, Laos, Myanmar, Thailand].

Open areas, woods; 1300-2000 m.

Plectranthus hispidus Bentham, Pl. Asiat. Rar. 2: 17. 1831; Isodon nigropunctata Murata; P. chienii Sun ex C. H. Hu; Rabdosia hispida (Bentham) H. Hara; R. shimizuana Murata.