Perisperm

Japanese: 外胚乳 - がいはいにゅう(英語表記)perisperm
Perisperm
Also called exosperm or perisperm. Endosperm is formed outside the embryo sac. It is a part of the nucellus that is developed. It is found in the Chenopodiaceae and Nymphaeaceae families.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
外乳,周乳ともいう。胚嚢外に形成される胚乳。珠心の一部が発達したものである。アカザ科,スイレン科にみられる。

出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報

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