Light microscope micrographs of Thelocactus rinconensis pollen. Pollen grains are spheroidal to ellipsoidal and 3-colpate (having three apertures).
Thelocactus rinconensis ssp. freudenbergeri Grutas de Garcia, Nuevo León Photo: A. Mosco
Thelocactus rinconensis ssp. nidulans Sierra de la Paila, Coahuila Photo: A. Mosco
Thelocactus rinconensis ssp. rinconensis Photo: A. Mosco
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