Caudex fusiform, ca. 1.5 cm, ca. 5 mm in diam. Stem more than 50 cm, simple or branched, basally glabrous, apically spreading pubescent. Middle cauline leaves with petiole 0.8--2 cm, spreading pubescent; leaf blade pentagonal, 2--7 × 3.5--9.5 cm, abaxially pubescent, adaxially sparsely pubescent or glabrous, 3-sect; central segment rhombic, apex acuminate; lateral segments obliquely flabellate, unequally 2-parted. Inflorescence corymbose, 3--9-flowered; rachis and pedicels spreading pubescent, bracts leaflike to linear. Pedicels ca. 2.5 cm, spreading pubescent, with 2 bracteoles at middle. Sepals blue-purple, both surfaces sparsely spreading pubescent; lower sepals 1.2--1.3 cm; lateral sepals 0.9--1.5 cm; upper sepal navicular, lower margin concave, 1.5--2.2 cm. Petals pubescent; limb ca. 0.9 cm; spur incurved. Stamens glabrous; filaments 2-denticulate. Carpels 3, sparsely pubescent or becoming glabrous. Follicles ca. 1.2 cm. Fl. Oct. 2n = 32*.
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