|Mccain, John - FORMER ARS EMPLOYEE|
Submitted to: Michigan Botanist
Publication Type: Other
Publication Acceptance Date: March 1, 1996
Publication Date: N/A
Technical Abstract: One species of chytrid fungus and seven species of rust fungi are reported for the first time from Minnesota. Rust fungi are obligate parasites of vascular plants, and many have a several-stage life cycle, producing aecia uredinia, and telia. Some chytrids are also plant pathogens and their sporangial sori may be mistaken for the aecia of rust fungi. The only known previous collection of the chytrid, Synchytrium shawii, was made in South Dakota in 1935. Six of the seven rust fungi newly reported from Minnesota had been collected previously in one or more of the adjacent states. The seventh species, Uromyces lineolatus, which produces aecia on water hemlock and water parsnip and produces uredinia and telia on the sedges Scirpus fluviatilis and S. paludosus, was previously known from the eastern United States.