FUSARIUM-NELSONII AND FUSARIUM-MUSARUM - 2 NEW SPECIES IN SECTION ARTHROSPORIELLA RELATED TO FUSARIUM-CAMPTOCERAS

An emended description of Fusarium camptoceras is provided to include the presence of pedicellate macroconidia produced in sporodochia and m esoconidia produced on polyblastic conidiogenous cells in the aerial m ycelium. Two new Fusarium species morphologically related to F. campto ceras in Section Arthrosporiella are described and illustrated. Fusari um nelsonii sp. nov. was isolated mainly from plant debris in soil and some other sources in South Africa, and differs from F. camptoceras p rimarily in the presence of red pigment on PDA, shorter macroconidia a nd mesoconidia with fewer septa and in the production of characteristi c terminal pairs of chlamydospores. Fusarium musarum sp. nov. was isol ated from banana fruit in Central America and differs from IE camptoce ras primarily in the presence of red pigment on PDA, longer mesoconidi a with more septa, and the absence of both sporodochia and pedicellate macroconidia.