Phoma spp on Culture and Microscopy Phoma spp. are a group of soil-dwelling fungi that grow spreading and dark (dematiaceous) on agar. Usually contaminants, they produce "pycnidia" - round fruiting bodies that split to release conidia. Rich Davis, PhD, D(ABMM), MLS @richdavisphd #Phoma #clinical #microscopy #microbiology #culture