Disa longipetala Bolus

Plants 70-200 mm tall, scape wiry, flexuose; basal leaves spathulate, lorate, apiculate, 8-12 mm long and 3-6 mm wide, margins crisped-undulate, cauline leaves 2-3, oblong, lanceolate, acute to acuminate, 8-13 mm long, the upper half free. Inflorescences (2-) 6 (-7)-flowered. Flowers greenish yellow, lip mesochile and base of the lateral sepals with purplish spots, filiform processes of the petals and lip dull purple; pedicels 3-10 mm long, ovaries 3-5 mm long. Median sepal recurved, lanceolate, acute, 7-12 mm long and 2-3 mm wide; spur 2-3 mm long, bluntly bifid, straight to slightly decurved, constricted at the base; lateral sepals narrowly lanceolate, acuminate, recurved, 8-12 mm long and 1.5-2 mm wide. Petals bent near the base, 2-3 mm long, basal anticous lobe absent, apex unequally bifid with the anterior lower altitudes than S. inflexum.