Various types of spore-bearing structures on the streptomyces Streptomyces spores, called conidia, are not related in any way to the endospores of Bacillus and Clostridium because the streptomycete spores are produced simply by the formation of cross￾walls in the multinucleate sporophores followed by separation of the individual cells directly into spores.Various types of spore-bearing structures on the streptomyces Streptomyces spores, called conidia, are not related in any way to the endospores of Bacillus and Clostridium because the streptomycete spores are produced simply by the formation of cross￾walls in the multinucleate sporophores followed by separation of the individual cells directly into spores