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