Self-pollination in buds and homostyly in Mussaenda shikokiana (Rubiaceae), a monomorphic species in a distylous clade
Shi CHEN,Zhong-Lai LUO, Dian-Xiang ZHANG
J Syst Evol . 2013, (6): 731 -742 .  DOI: 10.1111/jse.12031