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Circinella
Colonies rather coarse and fast-growing. Spores produced within dark spherical sporangia that are borne along the length of sporangiophores on strongly curved or hooked branches. The filaments have few cross-walls and thus resemble long, hollow tubes. The most characteristic feature is the strongly hooked sporangial branch. Occurring in soil, dung, and decaying nuts.
Classification: Mucoraceae (Zygomycota). Ref: Arambarri and Cabello, 1996; Hesseltine and Fennell 1955; Zycha and Siepmann 1970.