Cunninghamella spp. spores are produced in sporangia. Microscopically they have stems with bulbous extensions and (apparent) aseptate hyphae, producing spherical sporangioles from the surface of a spherical vesicle; colonies are grey-white with cottony growth filling the Petri dish. See image on the right.
Mucor spp. may have branched sporangiophores and spores in sporangia; no rhizoids or stolons.
Rhizopus spp. spores are produced in sporangia and have unbranched sporangiophores with rhizoids opposite the point where the stolon arises.
Syncephalastrum spp. spores are produced in cylindrical sporangia; sporangiophores can produce rhizoids.
