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Definition of Class sphenopsida
1. Noun. Horsetails and related forms.
Exact synonyms: Class Equisetatae, Equisetatae, Sphenopsida
Generic synonyms: Class
Group relationships: Division Pteridophyta, Pteridophyta
Member holonyms: Equisetales, Order Equisetales
Generic synonyms: Class
Group relationships: Division Pteridophyta, Pteridophyta
Member holonyms: Equisetales, Order Equisetales