Description from Flora of China
Lumnitzeria fastigiata (Roth) Sprengel; Ocimum fastigiatum Roth; O. virgatum Thunberg; Salvia brachiata Roxburgh; S. minutiflora Bunge; S. plebeia var. latifolia E. Peter.
Herbs annual or biennial. Stems erect, 15-90 cm, robust, much branched, retrorse gray pilose. Petiole 4-15 mm; leaf blade elliptic-ovate to elliptic-lanceolate, 2-6 × 0.8-2.5 cm, adaxially sparsely minutely hispid, abaxially finely pilose, sparsely yellow-brown glandular, base rounded to cuneate, margin crenate, dentate, or serrate, apex obtuse to acute. Inflorescences densely pilose; verticillasters 6-flowered, numerous, in racemes or panicles 10-25 cm; bracts lanceolate. Pedicel ca. 1 mm. Calyx campanulate, ca. 2.7 mm, pilose, sparsely yellow-brown glandular, 2-lipped to 1/3 its length; upper lip 3-denticulate; lower lip deeply 2-toothed, teeth triangular. Corolla reddish, purplish, purple, blue-purple, to blue, rarely white, ca. 4.5 mm; tube glabrous, hairy annulate inside; upper lip oblong, ca. 1.8 × 1 mm, densely puberulent; lower lip ca. 1.7 × 1 mm, middle lobe broadly obovate. Stamens slightly exserted; filaments ca. 1.5 mm; connectives ca. 1.5 mm, arcuate, arms subequal. Nutlets obovoid, ca. 0.4 mm in diam. Fl. Apr-May, fr. Jun-Jul.
Used as a folk medicine. Easily recognized by the very small flowers.
Hillsides, streamsides, wet fields; 0-2800 m. In every province except Gansu, Qinghai, Xinjiang, Xizang [Afghanistan, India, Indonesia, Japan, Korea, Malaysia, Myanmar, Russia, Thailand, Vietnam; Australia]