Pigea vernonii subsp. vernonii

Herb, to 1 m tall, glabrous. Leaves mostly lanceolate, the upper ones usually linear, 0.5–4.5 cm long; stipules linear, c. 0.5 mm long. Flowers solitary, axillary. Sepals lanceolate, 1.5–5 mm long, green; petals blue-mauve, lower petal ovate, 9–16 mm long, upper pair broadly oblong, lateral petals narrowly oblong. Capsule 6–8 cm long; seeds globose, c. 2.5 mm diam., smooth, with a prominent pale caruncle c. 1 mm long.  Flowers Jun.–Oct.