Share this entry

Share this page

seed fern

Line breaks: seed fern

Definition of seed fern in English:

noun

Another term for pteridosperm.
Example sentences
  • One example, from the Calhoun Flora of Illinois, is a seed fern that bears prepollen (a kind of microspore) far bigger than any known wind-dispersed pollen.
  • Glossopteris, for example, was an extinct seed fern with distinctive leaf patterns.
  • There is some agreement that both living and extinct cycads were derived from seed ferns, but paleobotanists still debate exactly if, when, and how this happened.

Definition of seed fern in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day cumbersome
Pronunciation: ˈkʌmbəs(ə)m
adjective
large or heavy and therefore difficult to carry…