Passiflora tessmannii Harms

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 : 12

Passiflora tessmannii Harms (in Mildbraed 1926: 978) ( Fig. 4H–K )

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

Figures

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).