leaves 10–20 in. long, 1/2–1 line thick, terete, acute, glabrous, with large, dark brown sheaths 2–3 1/2 in. long; peduncular sheath leafless, 4 1/2–5 1/2 in. long; peduncle 16–24 in. long, 2/3–1 line thick, terete, glabrous; spike 4–6 lin. long, 3–3 1/2 lin. thick; ovoid or oblong; bracts 2–3 lin. long, 1 1/2–2 lin. broad, elliptic or elliptic-oblong, very obtuse, entire, not ciliate, opaque dark brown, glabrous, 7–9-nerved; nerves more or less reticulate in the upper part; lateral sepals 2 1/2–2 3/4 lin. long, falcate-lanceolate, brown, with a darker brown, ciliated, wing-like keel, produced into an acute point at the apex; corolla yellow, with a tube about 3 lin. long, and broadly cuneate-obovate, denticulate lobes, 2 1/2 lin. long, 2 lin. broad; arms of staminodia divided into tufts of fine hairs; anthers oblong, 1 line long. null