Gymnosperms
These plants represent the cone bearing plants including conifers and cycads. Higher order classification follows:
- Maarten J.M. Christenhusz, James L. Reveal, Aljos Farjon, Martin F. Gardner, Robert R. Mill & Mark W. Chase, A new classification and linear sequence of extant gymnosperms, Phytotaxa 19:55-70 (2011)