seed fern

seed fern

n (Plants) another name for pteridosperm

seed′ fern`

n. any of various fossil plants of the order Lyginopteridales (or Cycadofilicales) that had fernlike leaves and reproduced by means of seeds. Also called pteridosperm. [1925–30]

Thesaurus

Noun

1.

seed fern - an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)pteridospermgymnosperm - plants of the class Gymnospermae having seeds not enclosed in an ovary