leaves about 3 or 4, long-petioled, somewhat arching, elongate-lanceolate, acuminate, with about 5 prominent veins, conduplicate at the base, 2–3 ft. long, 2–2 1/2 in. broad; scape very stout, erect, 3–4 ft. high, with spathaceous imbricate sheaths below; racemes 6–9 in. long, rather dense, many-flowered; bracts elliptic-oblong or oblong-lanceolate, acute or subacute, 1/3– 3/4 in. long; pedicels slender, about 3/4 in. long; flowers yellow; sepals subspathulate-oblong, obtuse, nearly 1 in. long; petals elliptic or elliptic-oblong, obtuse, twice as broad as the sepals; lip rather longer than the petals, elliptic-oblong, obtuse, obscurely 3 lobed; side lobes narrow, undulate; front lobe broadly oblong or orbicular-oblong, obtuse, very undulate; disc with 3 thickened crenulate keels behind, and 5–7 taller, more crenulate and undulate keels in front; spur broadly conical, obtuse, nearly 1/4 in. long; column clavate, 1/2 in. long. null
