Salvia triangularis Thunb.

Perennial herb branching from the scarcely woody base; stems sparingly branched, decumbent-ascending, 0.15-0.5 m long, hispid-villous. Leaves petiolate; blade simple, ovate-triangular, 20-40 x 15-30 mm, shortly villous, apex obtuse to rounded, base truncate to subcordate, occasionally shortly auriculate, margin irregularly crenate. Inflorescence of up to 10 verticils, spaced below, denser above; verticils (2-)4-6-flowered. Calyx shortly villous, up to 13 mm long in fruit, campanulate, with a wide sinus between the upper and lower lips; upper lip with 3 subequal acuminate teeth 2-2.5 mm long, the middle tooth often slightly shorter than the outer two. Corolla pale blue, mauve or purple, 12-16 mm long; tube 8-11 mm long; upper lip straight, 2.5-3 mm long; lower lip slightly longer.