Sytsma, Kenneth J.; Morawetz, Jeffery; Pires, J. Chris; Nepokroeff, Molly; Conti, Elena; Zjhra, Michelle; Hall, Jocelyn C. & Chase, Mark W., Urticalean rosids: Circumscription, rosid ancestry, and phylogenetics based on rbcL, trnL–F, and ndhF sequences, Am J Bot, 2002, 89 (9): 1531–1546, PMID 21665755, doi:10.3732/ajb.89.9.1531
Cannabaceae (页面存档备份,存于互联网档案馆). In Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 [and more or less continuously updated since].
nih.gov
ncbi.nlm.nih.gov
Sytsma, Kenneth J.; Morawetz, Jeffery; Pires, J. Chris; Nepokroeff, Molly; Conti, Elena; Zjhra, Michelle; Hall, Jocelyn C. & Chase, Mark W., Urticalean rosids: Circumscription, rosid ancestry, and phylogenetics based on rbcL, trnL–F, and ndhF sequences, Am J Bot, 2002, 89 (9): 1531–1546, PMID 21665755, doi:10.3732/ajb.89.9.1531
Cannabaceae (页面存档备份,存于互联网档案馆). In Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 [and more or less continuously updated since].