The outer surface of yew tree leaf is covered by a thick cuticle and epicuticular in the top.The surface view of epidermal cells appears square or rectangular on the abaxial and adaxial leaf sides.

• 红豆杉叶片外表面覆盖较厚的角质层和表面蜡质，具有乳头状角质钉，以及长条形或顶端分叉的角质突起。