Leucas decemdentata (Willd.) Sm.

Annual herb, 0.25-1.5 m. Stem and branches slender, covered with soft appressed or long villous hairs. Leaves thin-or thick-membranaceous, lanceolate to narrowly or broadly ovate, 2-3(-4) by l-1.5(-3) cm, obtuse or acute, base rounded or cuneate, entire; margin elsewhere crenate-serrate or coarsely serrate, densely tomentose on both surfaces; petiole 0.2-1 cm. Flowers 2-8(-10) in spaced axillary verticillasters. Bracts linear, 2-3 mm, setose. Calyx tubular, 5-9 mm long, in fruit 7-10 mm, sparsely or densely tomentose outside, 10-toothed, teeth lanceolate or triangular at the base and abruptly narrowed apically. Corolla 13-16 mm long, tube short-or long-exserted, annulate within; lower lip slightly longer than the upper one. Filaments white; anthers red. Nutlets obovoid, 1.5 by 0.5 mm, subtruncate above, smooth.

In open waste places, thickets and grassland, forest edges, or on limestone hills and littoral rocks, at low and high altitudes e.g. in tjemara forest in E. Java, from sea-level ascending to 3000 m. Fl. Jan.-Dec.

The leaves are eaten as a pot-herb.

Can be grown by seedlings.