progymnosperm

名词 n.
中文释义

英文释义

名词 n.
  1. A very early form of plant that produced both wood (like trees) and spores (like ferns).
    — Pycnoxylic wood is a primitive feature of progymnosperms with regard to manoxylic wood with wide and high rays.

词形变化

progymnosperms plural

词源

From pro- + gymnosperm.
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