Erect herb, 6–20 cm. tall, from a tuber; stem sometimes branched, ribbed below, sulcate in the inflorescence region, sparsely and finely pubescent above.. Leaves sessile or shortly petiolate, 15–50(–80) mm. long, 6–25 mm. wide, narrowly to broadly ovate, acute at the apex, serrate-crenate, glabrous; venation prominent beneath.. Raceme dense, leafy; pedicels 4–15 mm. long, finely pubescent; bracteoles 2–4 mm. long, linear.. Hypanthium broadly obconical, 10-nerved, finely pubescent or subglabrous.. Calyx-lobes narrowly triangular, 3–6.5 mm. long, with 1–3 pairs of teeth at the margin, glabrous.. Corolla 11–17 mm. long, mauve, scarcely saccate at the base, split to the base into 2 lips, the upper 3-lobed but finally ± disintegrating, the lower divided into 2 free petals; all petals linear, glabrous outside, pubescent inside towards the base.. Stamens 5.5–6.5 mm. long; filaments dilated and connate at the base, ± pubescent; anthers elliptic-oblong, 2–2.4 mm. long, lanate with curled hairs ± 1 mm. long on the back of the connective, and at the tip with a tuft of short hairs.. Ovary semisuperior; style 4–5 mm. long.. Capsule and seeds unknown.
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