FIGURE 4 in Pollen morphology and its taxonomic significance in Iranian Colchicum (Colchicaceae)

FIGURE 4. SEM micrographs of pollen grains in species of Colchicum. A, B. C. freynii. C, D. C. triphyllum. E, F. C. kotschyi. G, H. C. speciosum. I, J. C. persicum. A, E, G, I, polar views; C, equatorial view; B, D, F, H, J, sexine ornamentation. (Scale bars, polar and equatorial view = 5 μm; sexine ornamentation = 2 μm.)