叶柄薄壁细胞存在晶体，叶柄的导管管径比较大，有大量的通气组织。
The crystals exist in parenchyma cells of its petioles. Its petioles have big vessels and much aerenchyma.
结果表明：TDZ对赤霞珠离体叶片、叶柄不定芽再生有诱导作用，对叶片、叶柄的最高诱导率分别为18.06%和28.57%；
The result indicated that TDZ had effect on the adventitious buds induction of "Carbernet Sauvignon". Adventitious bud regenerating rate from leaf and petiole is 18.06% and 28.57%, respectively.
暴马丁香叶柄表皮外覆有一层发达的角质层，韧皮部外有较发达的韧皮纤维。
In the petiole of Suringa reticulata (Blume) Hara var. mandshurica (Maxim. ) Hara, there are thick cuticle on the epidermis, developed phloem fiber surround the phloem.
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