Isodon silvaticus (C. Y. Wu & H. W. Li) H. W. Li

Subshrubs. Stems erect, yellow-brown, densely gray pubescent. Leaves opposite; petiole 5-10 mm; leaf blade ovate, 3-5 × 1-3 cm, papery, adaxially sparsely hirtellous, abaxially yellowish glandular, sparsely pubescent on veins, base broadly cuneate to rounded, margin coarsely crenate-serrate, apex acuminate, lateral veins 4-paired. Panicles terminal and axillary, 5-9 cm, densely pubescent; cymes pedunculate, 3-flowered; floral leaves ovate, margin crenate, serrate, or subentire. Pedicel ca. 2 mm. Calyx campanulate, ca. 4 × 3 mm, densely pubescent, glandular, slightly 2-lipped; teeth ca. 2 mm, ovate-triangular, apex acute; fruiting calyx tubular-campanulate, dilated to 6.5 mm, slightly curved. Corolla ca. 7 mm, pubescent, tube ca. 3.5 mm, upper lip ca. 2.5 mm, lower lip ca. 3.5 mm. Stamens included. Style exserted. Nutlets yellow-brown, triquetrous, oblong, ca. 1.8 mm, glabrous. Fl. and fr. Aug-Sep.

Xizang.

* Forests; ca. 4000 m.

Rabdosia silvatica C. Y. Wu & H. W. Li, Fl. Reipubl. Popularis Sin. 66: 588. 1977.