Plants 20-40(-50) cm., flowering with the leaves. Tuber up to 4 cm. long, 4.5 cm. wide, subglobose; skin dark brown, rough; flesh deep pink to maroon red. Old leaf-sheaths up to 6.5 cm. long. Leaves 2-5, erect to suberect; leaf-sheath barely exserted; blade narrowly to broadly ovate, 4-15 cm. long, 1.5-6.2 cm. wide, basally channelled and clasping the inner sheaths, bright green, coriaceous to fleshy, with raised veins. Peduncle up to 40 cm. long and 4 mm. diameter; raceme up to 24 cm. long, up to 3.5 cm. wide, cylindrical to narrowly conical, with up to 50 flowers; bracts ovate, attenuate, 1-2 mm. long, membranous; pedicels up to 2.5 cm. long, lower longer than upper. Flowers up to 2.1 cm. across, campanulate. Tepals ligulate, 5-10 mm. long, equal, bright yellow with a green midnerve, becoming spreading to recurved. Filaments up to 6 mm. long, yellow, erect; anthers ± 0.5 mm., yellow. Ovary ovoid, pale green, 1.5-2.5 mm. long, 1-2 mm. wide; style cylindrical, 3-4.5 mm. long, white. Fruit obovoid, up to 8 mm. long and 7 mm. wide.