Asteroxylon
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A Devonian plant belonging to the Archaeophyte class of ferns. The underground stems are 1-5 mm in diameter, have stomata, are 1 mm to 5 cm in diameter, and have needle-like scales. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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シダ植物古生マツバラン綱に属するデボン紀の植物。地下茎は径1～5mmで，茎には気孔を有し，径 1mmないし 5cmに及び，針状の鱗片を有する。
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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