Japan Flora: Stems ascending, 10-30 cm. long, very short re- curved-puberulent; leaves deltoid-ovate to ovate, sometimes ovate-cordate in the lower ones, 2-3.5 cm. long, 1-2.5 cm. wide, obtuse, rounded to broadly cuneate at base, scattered undulate-toothed, loosely pilose above, puberulent on the nerves beneath; spikes 3-5 cm. long, the axis with simple spreading and glandular hairs; calyx 1.5-2 mm. long; corolla 15-18 mm. long, purple. May-June.