Pseudostems 50--80 cm. Ligule ca. 5 mm, somewhat leathery, glabrous, apex subtruncate; petiole 5--10 mm; leaf blade narrowly oblong, 16--30 × 3.5--8 cm, glabrous, base cuneate, apex caudate. Spikes capitate, 7--8 × 5--6 cm; bracts narrowly lanceolate, 1.7--2 cm, glabrous, 1-flowered; bracteoles tubular, ca. 1 cm. Calyx ca. 2.5 cm, split on 1 side. Corolla tube ca. 5 cm; lobes yellowish, linear, 4--5 cm. Lateral staminodes white, very narrowly oblanceolate, ca. 3 cm × 3 mm. Labellum narrowly obovate, ca. 3 cm × 7 mm, apex entire but projecting; claw ca. 1.2 cm. Filament yellowish except for orange apex, ca. 5 cm; anther brown-red, ca. 1.2 cm. Ovary green, glabrous. Fl. Aug.
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