Pterygodium caffrum Sw.

Plants erect, slender to fairly robust, to 340 mm; leaves cauline, 4 or more, ovate-lanceolate, acute, to 85 x 32 mm. Inflorescences fairly dense, to 120 mm long; few to numerous-flowered; bracts ovate-attenuate, reaching to halfway up flowers, c. 20 x 7 mm. Flowers c. 28 x 15 mm, sepals pale greenish, petals and lip yellow; ovaries c. 13 mm long; scent pungent. Median sepal narrowly-oblong, acute, 9-11 x 2.5-3 mm, adnate to the petals; lateral sepals spreading, saccate, acute, c. 9-11 x 5 x 2 mm. Petals erect, subobdeltate, upper margin crenulate, c. 7-12 x 5-7 mm. Lip with 2 broad, diverging, rounded lobes, each 7-9 x 5-8 mm, sometimes with a minute ventral tooth; apªpendage erect and rather stout, apex with large ventral cavity, 5-7 x c. 5 mm. Rostellum c. 2 mm tall, arms c. 1 mm long.