Japan Flora: Stems branched; leaves rhombic-elliptic to narrowly rhomboidal, 8-20 cm. long, 3-8 cm. wide, acuminate, gradually narrowed to the petiole, obtusely deltoid-toothed and mucronate-tipped, with scattered white multicellular curled hairs on upper side, and on nerves beneath, the upper leaves short-peti- olate, rounded, subcordate to truncate at base; inflorescence racemosely few-flowered, on long peduncles placed just beneath the leaves, usually with whitish multicellular curled hairs on the lower part, arcuate above, the pedicels to 1.5 cm. long, slender, the bracts broadly lanceolate to deltoid-ovate; flowers purplish red, about 2 cm. across, with deeper colored spots, the spur forwardly curved; fruit linear-lanceolate. July-Oct.
Honshu (Kinki Distr.), Shikoku, Kyushu.
var. microhypophylla (Nakai) H.Hara. Flowers smaller, about 1 cm. across, without purple spots, the pedicels less than J cm. long. Honshu (Totomi Prov.).