| 释义 |
Psilopsida
Thesaurus| Noun | 1. | Psilopsida - whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacsclass Psilopsida, class Psilotatae, Psilotataeclass - (biology) a taxonomic group containing one or more ordersdivision Pteridophyta, Pteridophyta - containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophytaorder Psilotales, Psilotales - lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots |
Psilopsida
Psilopsida[sī′läp·səd·ə] (botany) A subdivision of the Tracheophyta. Psilopsida
Psilopsida a TRACHEOPHYTE subdivision that includes many extinct forms. Related to the ferns, living forms are placed in the order Psilotales and are tropical or subtropical EPIPHYTES.Psilopsida
Synonyms for Psilopsidanoun whisk fernsSynonyms- class Psilopsida
- class Psilotatae
- Psilotatae
Related Words- class
- division Pteridophyta
- Pteridophyta
- order Psilotales
- Psilotales
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