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(), n.; pl. Xanthidia (). [NL., fr. Gr. xanqo°s yellow.] (Bot.) A genus of minute unicellular alg of the desmids. These alg have a rounded shape and are armed with glochidiate or branched aculei. Several species occur in ditches, and others are found fossil in flint or hornstone. スポンサード リンク
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