分泌囊 secretory sac
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植物体充满分泌物的囊状细胞间隙。开始分泌的分泌物在细胞内呈滴状,随着数量的逐渐增加,细胞质逐渐减少,细胞壁遂破裂形成破生细胞间隙,进一步扩大而成袋状。芸香科(Rutaceae)、海桐花属(Pittosporum)、酢浆草属(Oxalis)等的油囊是裂生分泌囊的扩大者,通常存在叶、茎的表皮下或更深的部位。对花椒属(Zanthoxylum)的分泌囊进行更多的研究。

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