Disa rufescens Sw.

Plants erect, 140-400 mm tall; leaves narrowly lanceolate to linear, basally to 70 mm long. Inflorescences slender spikes, 30-150 mm long and 15 mm in diameter, with 2-25 flowers; bracts dark green, imbricate and partially obscuring the flowers. Flowers lime-green with dark-purple petals and lip. Median sepal shallowly galeate, oblong, obtuse to rounded, 9-11 mm long; spur slender, cylindrical, acute, 10-16 mm long; lateral sepals oblong, obtuse, 6-8 mm long. Petals obliquely narrowly oblong, truncate, 6-7 mm long, the narrowly oblong apical part forming a tube with the median sepal. Lip narrowly oblong, obtuse, 6-7 mm long. Anther semi-pendent; stigma pedicellate, not as tall as the rostellum; rostellum c. 1 mm tall, viscidium elongated backwards with a longitudinal dorsal groove.