Japan Flora: Rhizomes short; stems erect, 5-15 cm. long, ascending-puberu- Ient; leaves few, ovate-deltoid, 1-2 cm. long, 1-1.5(-2) cm. wide, obtuse, truncate at base, coarsely obtuse-toothed, with ascending hairs on both sides, purplish beneath; spikes usually short, 1-3 cm. long, many-flowered, ascending-puberulent; calyx 2.5 mm. long in flower, about 5 mm, long in fruit; corolla 17-20 mm. long, purplish, the lower lip spreading, the upper lip arcuate, galeate, as long as the lower; nutlets about 1 mm. long, densely mammillate. May-June.

Honshu, Shikoku, Kyushu.

var. discolor (Hara) Hara. Plants taller, 20-30 cm. high; leaves larger, 2-4 cm. long; spikes more or less elongate.  Honshu, Kyushu.

var. yakusimensis (Masam.) Hara. Plant smaller, often with decumbent stems and rather numerous leaves. Kyu­shu (Yakushima).