FIGURE 3 in The systematic value of pollen morphology of Passiflora subgenus Astrophea (Passifloraceae)

FIGURE 3. Photomicrographs and electron photomicrographs of pollen grains of the species of Passiflora subg. Astrophea. A. P. chlorina—equatorial view: A. apertures. B–C. P. emarginata—polar view: B. optical section; equatorial view: C. general aspect. D–E. P. fuchsiiflora—polar view: D. optical section; equatorial view: E. endoaperture. F–H. P. lindeniana—polar view: F. general aspect; equatorial view: G. pontoperculum. H. ornamentation detail. I–M. P. phaeocaula—polar view: I. general aspect, J–K. L.O. analysis; equatorial view: L. general aspect. M. ornamentation detail. Scale bar: 10 μm (A, B, C, D, E, F, G, I, L). 5 μm (J, K); 2 μm (H, M).