General features of the seed plants
Common name
Gnetophytes
Synonyms
None
Sporophytes
Dioecious: shrubs, vines
Strobili
Compound pollen cone; seed cone with 1-2 ovules
Undulipodia (“flagella”)
None
Representative genera
Ephedra, Gnetum, Welwitschia
Recognized by
Compound pollen cones, opposite leaves