Leaves abaxially densely white or yellowish tomentose or sericeous .

叶背面浓密白色的或淡黄被绒毛的或被绢毛。

Mature leaves abaxially densely sericeous .

成熟的叶背面密被绢毛。

Young branchlets and leaves glabrous or pilose , neither tomentose nor sericeous .

幼枝和叶无毛或具柔毛，既不被绒毛也不被绢毛。

Flowering stems and petioles villous or also white tomentose ; leaflets abaxially sericeous or pilose .

花茎和叶柄具长柔毛或者还有白色被绒毛；小叶背面的被绢毛的或具柔毛。

Leaflets abaxially wholly tomentose or sericeous , sometimes glabrescent .

小叶背面的完全被绒毛或者被绢毛，有时脱落无毛。