Pseudorhipsalis Britton & Rose

Ruiz-Dominguez, Catalina, Vovides, Andrew P. & Sosa, Victoria, 2019, Systematic relevance of pollen morphology in tribe Hylocereeae (Cactaceae), PhytoKeys 128, pp. 121-140 : 127

Pseudorhipsalis Britton & Rose

Pollen.

pantocolpate, radially symmetrical, isopolar with circular contour in polar view. Shape: oblate-spheroidal (P/E=0.99). Apertures: 12, brevicolpate, small; polar area large (PAI=0.62). Measurements: pollen grains large, (73.59)81.71(93.64) × (76.00)81.23(86.72) μm in equatorial view; exine thickness (2.85)3.19(3.48) μm. Exine: marginated. Ornamentation: smooth surface with tectum perforate, ornated with spinules of (0.64)0.78(0.99) μm length × (0.39)0.48(0.54) μm diameter in base; perforations (0.05)0.11(0.19) μm in diameter ( Figure 4H ).

Species examined.

Pseudorhipsalis amazonica (K. Schum.) Ralf Bauer (Ecuador, Napo. E. Gudiño 145 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).