Lawn with rust infestation. Photo found at: http://www.ces.purdue.edu/extmedia/BP/BP-110-W.pdf

Close-up of rust on turfgrass. Photo found at: http://www.ces.purdue.edu/extmedia/BP/BP-110-W.pdf

Dog stinkhorn fungus. Photo provided by: Teresa Mardis, Bugwood.org