Rhizomes green inside; roots tuberous at tip. Leaf sheath rusty; petiole 4.5--15 cm; leaf blade with ca. 2 cm purple cloud at center, oblong or broadly lanceolate, 45--50 × 13--15 cm, glabrous, midvein green, base attenuate, apex caudate. Inflorescences terminal on pseudostems; peduncle ca. 3.2 cm; spike cylindric, 13--16 × 7--8.5 cm; fertile bracts green, pale purple at margin and apex, ovate-elliptic, ca. 5 × 2.3 cm; coma bracts deep purple except for white base, oblong, ca. 6 × 1.8 cm. Calyx white with pink apex, ca. 1.9 cm. Corolla tube pink, ca. 3.8 cm, villous at throat; lobes purple, suborbicular, ca. 1.1 × 1 cm. Lateral staminodes yellow, subovate. Labellum yellow, obovate, ca. 1.5 × 1.7 cm, apex emarginate. Filament flattened; anther white, ca. 5 mm. Ovary villous. Fl. Jul. 2 n = 63*.
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