indumentum

1. Leaf blade base cuneate, abaxial surface with gray-white indumentum; corolla magenta-rose.
   背面用灰白色的毛被，叶片基部楔形；花冠红色苯胺染料玫瑰色。
2. On the basis of the indumentum characteristics, the classification and evolution of Toxicodendron vernicifluum were discussed.
   本文根据漆树的毛被特征对漆树的分类和演化进行了探讨。

noun

1. a covering of fine hairs (or sometimes scales) as on a leaf or insect

   Synonym:    indument