Urediniospores (or uredospores) are thin-walled spores produced by the uredium, a stage in the life-cycle of rusts. ==Development== Urediniospores develop in the uredium, generally on a leaf`s under surface. ==Morphology== ...
A binucleate repeating spore borne in the uredinium. (Uredinales) (Also uredospore, urediospore.)