Sepals 5, deciduous, lanceolate, abaxially subglabrous, sparsely glandular punctate, adaxially villous, margin few lobed, apex acuminate.

• 萼片5，落叶，，具点的背面近无毛，疏生腺体，正面具长柔毛，很少浅裂的边缘，先端渐尖。