Molecular phylogenetic analysis of Leibnitzia Cass. (Asteraceae: Mutisieae: Gerbera-complex), an Asian-North American disjunct genus
Kristen E. BAIRD,Vicki A. FUNK,Jun WEN,Andrea WEEKS
J Syst Evol . 2010, (3): 161 -174 .  DOI: 10.1111/j.1759-6831.2010.00077.x