Caudex narrowly conical or carrot-shaped, 3.5--6.5 cm, ca. 1.2 cm in diam. Stem 60--150 cm, 4--10 mm in diam., several branched or simple, basally glabrous, apically retrorse pubescent. Proximal cauline leaves withered at anthesis, middle ones slightly long petiolate; petiole 6--9 cm; leaf blade broadly pentagonal, ca. 7 × 9.5 cm, both surfaces sparsely shortly appressed pubescent, 3-parted; central lobe rhombic, apex acute, 3-fid; lateral lobes obliquely flabellate, unequally 2-parted. Inflorescence 6.5--30 cm, 6--28-flowered; rachis and pedicels densely spreading yellowish pubescent and shortly glandular pubescent; bracts leaflike. Proximal pedicels 2.5--6.5 cm, distal ones ca. 2 cm, with 2 bracteoles proximally or distally; bracteoles leaflike. Sepals grayish blue-purple, abaxially pubescent; lower sepals ca. 1 cm; lateral sepals 1.5--1.7 cm; upper sepal navicular, 1.8--2.4 cm from base to beak, 1--1.2 cm wide at middle. Petals sparsely pubescent; lip ca. 4 mm, slightly concave; spur slightly incurved, ca. 1.5 mm. Stamens glabrous; filaments entire. Carpels 5, densely pubescent. Fl. Aug--Sep.
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