花萼

Calyx cup-shaped, almost truncate, outside pulverulent pubescent.

萼杯状，几乎截形，外面粉状短。

Calyx 5- or rarely 4-partite, quincuncial, basal glands usually present.

萼5或者很少4分裂，通常基部腺体宿存，梅形，基部通常有腺体。

Rachis and pedicels lanuginose or tomentose; bracts orbicular-ovate, 5–7 mm, both surfaces densely sericeous; calyx adaxially densely sericeous; leaf base subcordate.

轴和绒或者绒；卵形苞片圆形，5-7毫米，两面；正面的萼是；叶基部近心形。