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Pseudostems 1--2 m. Leaves sessile; leaf sheath slightly pubescent; ligule 3--5 cm, membranous; leaf blade elliptic-lanceolate or lanceolate, 20--50 × 4--10 cm, abaxially pubescent, base attenuate, margin membranous, apex caudate-acuminate. Spikes oblong, 15--20 × 3--6 cm; bracts imbricate, oblong to ovate, 3--4.5 × 2--4 cm, concave, 4-or 5-flowered; bracteoles tubular, membranous. Flowers yellow or yellow-white, fragrant. Calyx 3.5--4 cm, split on 1 side, apical margin entire. Corolla tube 7--8.5 cm, slender; lobes linear, 3--3.5 cm. Lateral staminodes wider than corolla lobes. Labellum erect, creamy yellow with an orange patch at base, obcordate, longer than wide, apex 2-lobed. Filament subequaling labellum. Ovary hairy. Stigma funnelform, margin bearded. Fl. Jul--Sep. 2 n = 34.
Perennial herb, up to 3 m high. Leaves sessile, up to 600 x 80 mm, lanceolate, lightly pubescent below, apex acuminate; ligule entire, pubescent. Bracts broadly ovate, unevenly pubescent, margins membranous, apex ± obtuse. Inflorescence with yellow flowers. Calyx pubescent, unilaterally splitting. Corolla: tube ± twice length of calyx; petals linear; labellum broadly obcordate, narrowed at base, bilobed above. Staminodes spathulate. Stamens up to 40 mm long. Ovary silky pubescent. Flowering time Dec.-Mar.
