Figure 1From: Testing a hypothesis of unidirectional hybridization in plants: Observations on Sonneratia, Bruguiera and LigulariaDAPI-stained epifluorescence microphotographs showing squashed pollen grains of (A) Sonneratia alba and (B) Bruguiera gymnorrhiza. GN, generative nucleus; VN, vegetative nucleus; PW, pollen wall.Back to article page