Leaf buttress A leaf primordium, appearing as a protuberance on the side of the stem apex, produced by periclinal division of the tunica and corpus, and associated with a procambium.
叶原座：顶端分生组织上的侧生突起发育成叶的原基，与原形成
有关。
Leaf buttress A leaf primordium, appearing as a protuberance on the side of the stem apex, produced by periclinal division of the tunica and corpus, and associated with a procambium.
叶原座：顶端分生组织上的侧生突起发育成叶的原基，与原形成有关。
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