Rhizome unknown. Stem to 70 cm tall, erect, simple, glabrous or apically retrorse pubescent. Basal leaves several, long petiolate; petiole to 15 cm, cauline leaves with petiole ca. 3.5 cm; leaf blade suborbicular, ca. 5 × 8 cm, abaxially glabrous or sparsely pubescent at veins, adaxially sparsely appressed pubescent, densely pubescent at veins, palmately 3--5-parted; central lobe rhombic or broadly rhombic, margin with orbicular teeth; lateral lobes obliquely flabellate, unequally 2-or 3-parted. Inflorescence terminal, 4--10-flowered; rachis and pedicels retrorse pubescent; bracts leaflike to lanceolate. Pedicels 4--8 mm, with 2 bracteoles at middle or above; bracteoles lanceolate to linear. Sepals yellow, abaxially retrorse pubescent; lower sepals oblong, 6--7 × 2--3 mm; lateral sepals suborbicular, 7--10 × 7--10 mm, adaxially middle and margin yellow villous; upper sepal cylindric, 1--1.3 cm high, middle 4--5 mm in diam., beaked, lower margin ca. 1 cm. Petals glabrous; lip linear, conspicuous; spur circinate, slightly longer than lip. Carpels 3, glabrous. Fl. Jul--Aug.
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