Crossword clues for puccinia puccinia Type genus of the Pucciniaceae A large genus of parasitic fungi including many that are destructive to various economic plants The Collaborative International Dictionary Related phrases: Puccinia graminis Puccinia graminis Puccinia graminis Wikipedia Puccinia Puccinia is a genus of fungi. All species in this genus are obligate plant pathogens and are known as rusts. The genus contains about 4000 species.