Caudex subfusiform, ca. 3 cm. Stem 56--100 cm, branched, sparsely retrorse and appressed pubescent, basally usually becoming glabrous, with crowded leaves. Middle cauline leaves shortly petiolate; petiole ca. 5 mm; leaf blade ovate, ca. 6.5 × 4 cm, both surfaces glabrous, 3-sect; central segment ovate, long stipitate, subpinnatisect; ultimate lobes linear, 1--1.5 mm wide; lateral segments unequally 2-parted. Inflorescence terminal, 15--28 cm, 12--30-flowered; rachis and pedicels densely retrorse pubescent; proximal bracts leaflike or 3-fid, others linear. Pedicels 0.5--3 cm, with 2 bracteoles above middle; bracteoles linear or linear-subulate, 1.5--3 mm. Sepals purple-blue, abaxially densely pubescent; lower sepals narrowly elliptic, ca. 1.2 cm; lateral sepals ca. 1.4 cm; upper sepal galeate-navicular, clawed, 1.5--1.7 cm from base to beak. Petals glabrous; lip ca. 4 mm; spur short, recurved. Stamens pubescent; filaments entire. Carpels 3, densely appressed pubescent. Follicles to 1.9 cm, pubescent. Seeds ca. 3 mm. Fl. Aug--Oct.
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