貫かん生せい葉よう

noun

perfoliate leaf

Botanical term for a leaf whose base surrounds the stem, giving the appearance that the stem passes through the leaf.

• ツキヌキニンドウは貫かん生せい葉ようを持もつ植しょく物ぶつの一いち例れいだ。

  The perfoliate honeysuckle is an example of a plant with perfoliate leaves.