Psilophytales

Từ điển WordNet v3.1 - WordNet Dictionary

noun

Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants
• Syn:
order Psilophytales
• Hypernyms:
plant order
• Member Holonyms:
Pteridophyta, division Pteridophyta
• Member Meronyms:
psilophyte, Psilophytaceae, family Psilophytaceae, Rhyniaceae, family Rhyniaceae