Hybanthus vernonii F.Muell.

Perennial herb to 1 m high. Leaves lanceolate, the upper ones often linear, up to 45 mm long; margins recurved; stipules linear, c. 0.5 mm long. Flowers solitary, axillary. Sepals lanceolate, acute, green, 1.5–5 mm long. Petals blue-mauve; anterior petal with ovate lamina, mostly 9–13 mm long; 2 lateral petals narrowly oblong, 1.5–3 mm long, 1–veined; posterior pair broadly oblong, several-veined. Anthers pubescent, the appendages triangular. Capsule 6–8 mm long. Seeds 3–6, smooth.