机译:Pollen morphological variation in Vanguerieae (Ixoroideae - Rubiaceae)
Laboratory of Plant Systematics, Institute of Botany and Microbiology, K. U. Leuven, Kardinaal Mercierlaan 92, B-3001 Leuven, Belgium;
Laboratory of Plant Systematics, Institute of Botany and Microbiology, K. U. Leuven, Kardinaal Mercierlaan 92, B-3001 Leuvens, Belgium;
National Botanic Garden of Belgium, Domein van Bouchout, B-1860 Meise, Belgium;