'''(1) This refers to the organ that performs functions such as photosynthesis and transpiration on the nodes of the stem. It is generally composed of the leaf blade, petiole, and stipules. Common shapes include needle-shaped, strip-shaped, lanceolate, elliptical, ovate, rhombic, heart-shaped, and kidney-shaped. (2) Ferns, cycads, and palm plants have organs on the nodes of the stem that perform functions such as photosynthesis and transpiration.'''
(1)着生于茎的节上进行光合和蒸腾等功能的器官。一般由叶片、叶柄和托叶组成。常见的形状有针形、条形、披针形、椭圆形、卵形、菱形、心形和肾形。(2)蕨类、苏铁类和棕榈类植物着生于茎的节上进行光合和蒸腾等功能的器官

Stem with leaves
带叶的茎

Leaf Juice
叶的汁液

Tender branches with leaves
带叶的嫩枝

Scaled Leaves
鳞状的叶子

Dried form of the secreted liquid from leaf.
叶的汁液的干燥体。