Pollination ecology of Gentiana siphonantha (Gentianaceae) and a further comparison with its sympatric congener species Genetic divergence and analysis of the relationships between species of Mosla (Labiatae) Characteristics of Seeds and Hybrid Seeds in Three Sympatric Cypripedium Species Comparative study of pollination biology of two closely related alpine Primula species, Primula beesiana and P. bulleyana (Primulaceae) Reproductive isolation between sympatric sister species, Mussaenda kwangtungensis and M. pubescens var. alba Investigation on Sex Pheromones in Lasiocampidae: Advance and Prospect Pre- and post-zygotic reproductive isolation between co-occurring Mussaenda pubescens var. alba and M. shikokiana (Rubiaceae) Floral nectary, nectar production dynamics, and floral reproductive isolation among closely related species of Pedicularis Analysis of gamete compatibility between Crassostrea hongkongensis and C. gigas