Pseudostems 1--2 m. Leaves sessile; leaf sheath greenish purple or purple, villous; ligule purple, oblong, 1.5--6 cm, villous; leaf blade lanceolate, rarely oblanceolate, oblong or ovate on proximal leaves, 10--50 × 6--16 cm, adaxially glabrous, abaxially villous, base subcordate to rounded or broadly cuneate, apex acuminate or caudate. Spikes cylindric, 22--35 × 14--20 cm; bracts oblong or lanceolate, 4.5--5.5 cm, villous, (1 or)2--4-flowered, margin involute; bracteoles ovate or oblong, 1.8--3.5 cm, pubescent. Flowers white. Calyx 4.1--4.5 cm, villous, apex 3-toothed. Corolla tube yellowish, 5.3--6 cm; lobes pale green or yellowish, linear, 4--4.5 cm × 3.5--4 mm, apex involute. Lateral staminodes white, flesh red at base, linear-oblanceolate. Labellum flesh red at base, suborbicular, 1.8--2.8 × 1.6--2 cm, apex 2-cleft; claw 6--8 mm. Filament flesh red, 5.2--5.7 cm; anther yellow, 1.1--1.4 cm. Ovary green, oblong, 4--5.5 mm, sparsely villous. Stigma ciliate. Capsule yellow, long ovoid, 2--3.5 × 1--1.5 cm, obtusely 3-angled. Seeds red; aril red. Fl. Sep.
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