cycad

名词 n.
中文释义

英文释义

名词 n.
  1. Any plant of the division Cycadophyta, having a stout and woody trunk with a crown of large, hard and stiff, evergreen leaves.
    — As has been already remarked, the occurrence of genuine Cycads in the Carboniferous vegetation has not been demonstrated, and the same holds good of all the Palaeozoic floras. True Cycads, therefore, so far as known, make their first appearance in the Trias, at the commencement of the Mesozoic period, where they are represented by the genera Pterophyllum, Zamites, and Podozamites.

词形变化

cycads plural

词源

From translingual Cycas (“genus of tropical trees”).
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