Plant 2–2 1/2 ft. high, glabrous. Stem leafy to the top. Leaves of barren shoot 1 ft. long, 7–14 lin. broad, strap-shaped, acute. Leaves of flowering stem longer than the internodes, with a tubular sheath and an ascending or spreading blade 1 1/2–4 in. long, 7–12 lin. broad, lanceolate or ovate-lanceolate, acute or obtuse. Spike 6–8 in. long, about an inch thick, not very dense. Flowers carmine-red. Bracts equalling or longer than the flowers, 3/4–1 in. long, 4 1/2–5 lin. broad, ovate-lanceolate, acute. Dorsal sepal 3 1/2–4 lin. long, 2–2 1/2 lin. broad, erect, elliptic, obtuse, broadly boat-shaped; spur 2–2 3/4 lin. long, 1/2 lin. thick, straight, subcylindrical, obtuse, pendulous. Lateral sepals spreading and ascending, 4 lin. long, 2–2 1/2 lin. broad, oblong, obtuse. Petals 3–4 lin. long, 1 3/4–2 lin. broad, unequally 2-lobed; the posterior lobe about 1 1/2 lin. long, 1/3 lin. broad, sigmoid, linear, obtuse; the anterior lobe much shorter than the posterior, suborbicular. Lip 3 lin. long, 1/4– 1/3 lin. broad, linear, subobtuse. Anther erect, 1 3/4 lin. long, oblong. Rostellum short, with a fold between the anther-cells.
