Selenicereus (ex Weberocereus)

Ruiz-Dominguez, Catalina, Vovides, Andrew P. & Sosa, Victoria, 2019, Systematic relevance of pollen morphology in tribe Hylocereeae (Cactaceae), PhytoKeys 128, pp. 121-140 : 128

Selenicereus (ex Weberocereus)

Pollen.

trizonocolpate to pantocolpate, radially symmetrical, isopolar with circular or convex-quadrangular contour in polar view. Shape: prolate-spheroidal (P/E=1.04-1.12). Apertures: 3 or 12, brevicolpate to colpate; polar area medium-sized to large (PAI=0.41-0.60). Measurements: pollen grains large to very large, (50.9)77.50(100.2) × (66.79)82.21(100.86) μm in equatorial view; exine thickness (2.29)2.96(3.77) μm. Ornamentation: smooth surface with tectum perforate, ornated with spinules of (1.12)1.48(1.82) μm length × (1.13)1.44(1.91) μm diameter in base; perforations (0.17)0.29(0.50) μm in diameter ( Figure 4I , 4J ).

Species examined.

Selenicereus alliodorus ( México, Oaxaca. Gómez-Hinostroza & H. M. Hernández) S. Arias & N. Korotkova (A. Ruiz Velazco et al. 86 MEXU); S. glaber (Eichlam) G.D. Rowley (Guatemala, Sacatepéquez. C.K. Horich BGA 57239 MEXU).

Figures

Figure 4. Pollen grains of tribe Hylocereeae (Scanning Electron Microscope photographs). A-D: Left polar view, right equatorial view A S. undatus (C. Ruiz et al. 560) B Weberocereus tunilla (C. K. Horich BGA 58344) C S. setaceus (H. Bravo et al. 2755). D-J: left polar view, left details of spinules and perforations D S. megalanthus (C. Ruiz et al. 563) E S. stenopterus (C. K. Horich s. n.) F S. triangularis (C. Gomez-Hinostrosa 2110) G Kimnachia ramulosa (L. Velasquez et al. 4884) H Pseudorhipsalis amazonica (E. Gudino 145) I S. alliodorus (A. Ruiz Velazco et al. 86) J S. glaber (C. K. Horich BGA 57239).