Disa crassicornis Lindl.

Plants erect, robust, up to 1 m tall; sterile shoots rarely produced, basal sheaths at least 1, hyaline basally; leaves 3-4, erect, narrowly lanceolate, petiolate; fertile shoots: cauline leaves imbricate, all largely reduced to sheathing leaves, basal sheaths not clearly differentiated, grading into the floral bracts. Inflorescences semi-lax, 5-25-flowered; bracts overtopping at least the lower flowers. Flowers large, c. 50 mm in diameter, white to cream with pink to purple mottling; strongly sweet-scented. Median sepal galeate, 20-40 x 15-30 x 10-15 mm deep, entrance rotund; spur grading into the galea, cylindrical, decurved, slightly inflated apically, 30-40 mm long; lateral sepals spreading horizontally, lanceolate to ovate-oblong, 25-30 x 10-20 mm, apiculi c. 1 mm long. Petals erect, flanking the rostellum, obliquely narªrowly ovate, often included in the galea, 20-30 x 10-15 mm. Lip horizontal basally, soon decurved, narrowly to broadly elliptic, 20-25 x 4-15 mm. Anther horizontal; stigma stipitate, equally tripulªvinate; lateral rostellum lobes large, canaliculate, central lobe minute.