Referencias

Flora of China
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=106119

Phytotaxa 84 (1): 1–24 (2013). A taxonomic revision of the genus Cephalotaxus (Taxaceae)
http://www.mapress.com/phytotaxa/content/2013/f/pt00084p024.pdf

Cephalotaxus: The Plum Yews
http://arnoldia.arboretum.harvard.edu/pdf/articles/1995-55-1-cephalotaxus-the-plum-yew.pdf