“acotyledon”的英文意思_释义_用法

单词

acotyledon

释义

acotyledon Bot.|əˌkɒtɪˈliːdən|
[f. mod.L. acotylēdones, f. Gr. ἀ without + κοτυληδών a cup-shaped hollow, also the plant Navel-wort, and in mod. Bot. a seed-lobe, f. κοτύλη a hollow, cup. It provides a sing. for the L. word, which is often retained unchanged in the pl.]
A plant which has no distinct cotyledons, or seed-lobes; as a fern, moss, fungus, or seaweed.
1819Pantologia I. s.v., The distinction of vegetables into acotyledons, monocotyledons, dicotyledons..has been long made, and is the basis of Jussieu's natural arrangement.1850McCosh Div. Govt. ii. i. 119 (1874) Acotyledons, without seed-lobes, such as lichens and fungi.

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