Thelocactus buekii
Light microscope micrograph of Thelocactus buekii pollen. Pollen grains are ellipsoidal and 3-colpate (having three apertures).
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							Thelocactus buekii | 
Light microscope micrograph of Thelocactus buekii pollen. Pollen grains are ellipsoidal and 3-colpate (having three apertures).
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							Thelocactus buekii |