Japan Flora: Stems 20-50 cm. long; leaves oblong-ovate to lanceolate, 4.5- 10 cm. long, nearly glabrous, the basal edges clasping the stem; flowers 3-5 in a terminal corymb, bracts ovate, up to 8 mm. long, the spur of the outer tepals much broader, 5-6 mm. wide.  Honshu (Sagami Prov.); rare.

var. surugensis Yamazaki. Leaves pubescent on costas and nerves beneath; brae按 short; spur small, 1-1.5 mm. wide; anthers dark brown.  Moun­tains; Honshu (Mount Tenshigatake in Suruga Prov.); rare.