FIGURE 1 in The systematic value of pollen morphology of Passiflora subgenus Astrophea (Passifloraceae)

FIGURE 1. Photomicrographs and electron photomicrographs of pollen grains of the species of Passiflora subg. Astrophea. A–D. P. macrophylla—polar view: A. general aspect; equatorial view: B. apertures, C. general aspect, D. ornamentation detail. Arrows indicate bacula and pila. E–G. P. jussieui—polar view: E. general aspect; equatorial view: F. apertures. G. ornamentation detail. H–K. P. cardonae— polar view: H. general aspect; equatorial view: I. endoaperture, J. general aspect. K. ornamentation detail. L. P. maguirei—polar view: L. general aspect. Scale bar: 10 μm (A–C, E–F, H–J, L); 2 μm (D, G, K).