Imagem de Oenothera fruticosa L.

Descrição:

Under a very low magnification of 50x, this scanning electron micrograph (SEM) revealed some of the morphologic ultrastructure found amongst a collection of pollen found within the dehisced, or split open, anther of a yellow "Fireworks" sundrops, Oenothera fruticosa flower. Note the pod-like configuration of the anther, within which reside many pollen grains ready for dissemination into the passing wind, or to become attached to a pollinator such as a bee. Judging by the shape of these pollen grains, it appears that the majority had yet to dry, for the elliptical, "football"-shaped grain, closer to the lip of the anther, represented those that had dried, and the round grains represented those that were still moist.
Created: 2006