FIGURE 6. Opuntia megacantha. A in Molecular and morphological notes on Opuntia ser. Streptacanthae (Cactaceae)

FIGURE 6. Opuntia megacantha. A. Epidermal cells of the middle part of the thorn, with fissures between the cells and smooth texture. B. Epidermal cells of the apical part of the thorn. C. Glabrous epidermis. D. Irregular epidermal cells, tetracytic stoma. E. Polyhedron-shaped pollen grain, pantoaperturate. F. Approach to a pore, warty walls.Published as part of Martínez-González, César Ramiro, Gallegos-Vázquez, Clemente, Mascorro- Gallardo, José O. & Barrientos-Priego, Alejandro F., 2022, Molecular and morphological notes on Opuntia ser. Streptacanthae (Cactaceae), pp. 1-28 in Phytotaxa 576 (1) on page 11, DOI: 10.11646/phytotaxa.576.1.1, http://zenodo.org/record/744087