pteridosperm
/ˈpterɪdəʊspɜːm/noun
1- a fossil plant which is intermediate between the ferns and seed-bearing plants, dying out in the Triassic period种子蕨。亦称SEED FERN.
1.1
- Formerly placed in their own taxon (class Pteridospermeae), but now included with the gymnosperms.旧时归入种子蕨纲, 现归入裸子植物。
词源
early 20th cent.: from modern Latin pteridospermeae,from Greek pteris,pterid- 'fern'.