fern

plural of pteridophyte

plural of pteridologist

A person who studies ferns and other pteridophytes.

(botany) The scientific study of ferns and other pteridophytes.

Any plant of the division Pteridophyta, of simple vascular plants that reproduce via spores rather than seeds and that alternate generations of diploid (sporophyte) and haploid (gametophyte or prothallus) forms, the diploid generally being larger and more conspicuous.

(botany) Of or pertaining to the pteridosperms.

Of or pertaining to the ferns of the division Pteridophyta.

Any of various extinct gymnosperms, of the division Pteridospermatophyta, resembling ferns, but producing seeds instead of spores

plural of pteridosperm