| 释义 |
Sphenopsida
Thesaurus| Noun | 1. | Sphenopsida - horsetails and related formsclass Equisetatae, class Sphenopsida, Equisetataeclass - (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 TracheophytaEquisetales, order Equisetales - lower tracheophytes in existence since the Devonian |
Sphenopsida
Sphenopsida[sfə′näp·səd·ə] (botany) A group of vascular cryptogams characterized by whorled, often very small leaves and by the absence of true leaf gaps in the stele; essentially equivalent to the division Equisetophyta. Sphenopsida
Sphenopsida a subdivision of the Tracheophyta, including the horsetails(Equisetum). Sphenopsida
Synonyms for Sphenopsidanoun horsetails and related formsSynonyms- class Equisetatae
- class Sphenopsida
- Equisetatae
Related Words- class
- division Pteridophyta
- Pteridophyta
- Equisetales
- order Equisetales
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