The term mucormycosis is now preferred for infections caused by molds belonging to the order Mucorales.

Today, the traditional system is still largely in use, as further studies are needed to reconcile morphological and molecular concepts of families and genera.

Sporangiophores are upright (simple or ramified) hyphae, that support sac-like sporangia filled with asexual sporangiospores.

In heterothallic species, sexual reproduction occurs when opposite mating types (designated + and -) come into close proximity, inducing the formation of specialized hyphae called gametangia.

The zygote develops a resistant cell wall, forming a single-celled zygospore, the characteristic that gives its name to this group of fungi.

The original report of sex in fungi, occurred two centuries ago, based on observations of the fungus Syzygites megalocarpus (Mucoromycotina) (reviewed by Idnurm[1]).