Passiflora phaeocaula Killip (1927: 430)

Mezzonato-Pires, Ana Carolina, Mendonça, Cláudia Barbieri Ferreira, Milward-De-Azevedo, Michaele Alvim & Gonçalves-Esteves, Vania, 2017, The systematic value of pollen morphology of Passiflora subgenus Astrophea (Passifloraceae), Phytotaxa 298 (1), pp. 1-19 : 9

Passiflora phaeocaula Killip (1927: 430) ( Figs. 3I–M )

Pollen grains medium-sized, prolate spheroidal ( Table 1), polar area large ( Table 2), amb subcircular; colpi long, narrow, endoaperture lalongate, pontoperculum ( Table 3) reduce significantly the width of the apocolpium; sexine reticulate, heterobrochate; muri simplecolumellate, sinuous, continuous, with perforations, without high columellae, not apparent, tectum surface mostly slightly curved, lumina slightly ornamented ( Fig. 4J, K, M ); there is no difference in the diameter of the lumina of the apocolpium and the mesocolpium; sexine thicker than nexine ( Table 4).

Figures

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).

FIGURE 4. Photomicrographs and electron photomicrographs of pollen grains of the species of Passiflora subg. Astrophea. A–B. P. rusbyi—equatorial view: A. endoaperture, B. general aspect. C–D. P. sclerophylla—equatorial view: C. general aspect. D. ornamentation detail.E–G.P.securiclata—polar view:E.general aspect; equatorial view: F.general aspect.G. ornamentation detail.H–K.P.tessmannii— polar view: H optical section; equatorial view: I. endoaperture, J. general aspect. K. ornamentation detail. L. P. venosa—equatorial view: general aspect. Scale bar: 10 μm (A, B, C, H, I); 5 μm (E, F, J, L); 2 μm (D, G, K).