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Lobosporangium, a new name for Echinosporangium Malloch, and Gamsiella, a new genus for Mortierella multidivaricata

     Department of Plant Pathology, 1453 Fifield Hall, University of Florida, Gainesville, Florida 32611-0680

Meredith Blackwell

     Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803-1715

Lobosporangium is proposed as a new name for Echinosporangium Malloch, a later homonym of Echinosporangium Kylin. Lobosporangium transversale was isolated from arid soils on three occasions between 1964 and 1968 but has not been reported again. Observations on sporangium development in culture revealed rapid sporangiospore germination, rapidly growing hyphae forming anastomoses, threefold dichotomously branching aerial sporangiophores and formation of clusters of eight sporangia. The sporangia of L. transversale are illustrated, and the placement of Lobosporangium in the Mortierellaceae is discussed. A new genus, Gamsiella, is proposed that is based on Mortierella multidivaricata. Sporangial ontogeny of Gamsiella is compared with that presented here for Lobosporangium.

Key words: Echinosporangium, Gamsiella, Lobosporangium, Mortierella, Mortierellaceae, Mortierellales, sporangium, Zygomycetes

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