1.Young stems terete to frequently 4-angled or subalate, glabrous, puberulous, pubescent, or tomentose, often glabrescent.

1.嫩茎圆柱常地四棱形或略似翼的，无毛，被微柔毛，短柔毛，或被绒毛的，通常后脱。

2.This gland is located on the distal end of spermatophore cyst, and shaped like a semicylinder which consists of many acini.

2.促雄性腺位于精荚囊末端，半圆柱，由许多腺泡组成，细胞富含粗网和高尔基氏体，推测其分泌蛋白性的激素。