Corona lobes 5, erect, acuminate, fleshy, attached to gynostegium.

副花冠裂片5，竖，，肉质，着生。

Petals white, subovate, very small, apex acuminate, rarely 2-fid.

花瓣白，近卵形，小，先端，少2裂。

Flowers pale violet or purple-violet, 3-5 cm.Lateral sepals 2, ovate-falcate, ca. 7 mm, 5-veined, inequilateral, apex acuminate.

花浅或罗兰，3-5厘米侧生萼片2，卵形镰刀形，约7毫米，5脉，不等侧，先端。