Lateral sepals 2, broadly ovate to orbicular, 6-8 mm, membranous, 4-8-veined, inequilateral, apex obtuse, mucronulate.

• 侧生萼片2，宽卵形到圆形，6-8毫米，膜质，4-8脉，不等侧，先端钝，具小短尖。