Rhizome ca. 15 cm. Stem to 80 cm, simple, retrorse pubescent. Basal leaves ca. 2, and proximal cauline leaves long petiolate; petiole 19--23 cm; leaf blade reniform, ca. 6 × 10 cm, both surfaces sparsely appressed pubescent, 3-parted; central lobe cuneate-rhombic, 3-fid, each lobe 2-or 3-lobulate, with several ovate teeth; lateral lobes obliquely flabellate, unequally 2-lobed. Inflorescence terminal, ca. 30 cm, many flowered; rachis and pedicels densely spreading yellowish pubescent; proximal bracts 3-fid, others narrowly lanceolate to linear, 5--7 mm. Proximal pedicels 1--4 cm, others 1--7 mm, with 2 bracteoles at base; bracteoles ovate to linear, 0.6--4 mm. Sepals purplish, densely spreading pubescent; lower sepals 0.7--0.9 cm; lateral sepals 1--1.3 cm; upper sepal high galeate, 7--9 mm high, long beaked, lower margin 1.1--1.5 cm. Petaline lip linear, conspicuous. Stamens glabrous; filaments entire. Carpels 3(--5), base and abaxial suture sparsely pubescent. Follicles 1--1.2 cm. Seeds ellipsoid, to 3 mm. Fl. Jul--Aug, fr. Sep. 2n = 16.
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