Corolla white or purple, bell-shaped, in the base of bending over the sudden expansion, the calyx bell-shaped, deep cleft Liepian oval, not anti-Vol.

• 花冠白色或紫色，钟状，在基部弯曲处以上骤然膨大，花萼钟状，裂片卵形深裂，不反卷。