Stem ca. 1 cm. Leaves 2--5; petiole 20--30 cm; leaf blade lanceolate-oblong, 15--25 × 5--6 cm, with 5--9 main veins. Scape 6--10 cm. Inflorescence a raceme, 9--25 cm; bracts lanceolate to lanceolate-oblong, 6--15 mm, membranous. Flowers solitary; pedicel 5--6 mm; bracteole 1, 3--5 mm. Perianth purple, 5.5--12 mm in diam.; tube ca. 2 mm, proximally adnate to ovary; lobes deltoid-ovate, ca. 4 mm. Corona undulate apically; anthers 0.5--1 mm. Style short; stigma 3-lobed. Seeds subglobose, ca. 1 cm. Fl. Apr--Jun, fr. Jul--Sep. 2 n = 36*.
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