Lictheimia corymbifera on Culture and Microscopy Formerly Absidia. Can look like Mucor, BUT sporagium w/ wide apophysis under and columella inside. - zygomycete (3rd most common after Mucoc Rhizopus) - environmental often a contaminant - distinctive microscopic features highly branched, wide apophysis, rare rhizoids, columella, collarette Best features: - Apophysis: Mucor, Rhizopus don't have this under the sporangium. - Columella: can see w/in or when sporagium bursts. - Technically they have rhizoids (but rare - never found any). Most rare microscopic feature of Lictheimia corymbifera might be the "collarette" - the remnants of the sporangium base when the structure is gone and no columella remains. I only saw two on this prep (and I looked for a long time). Rich Davis, PhD, D(ABMM), MLS @richdavisphd #Lictheimia #corymbifera #clinical #microscopy #microbiology #culture #zygomycete
