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Mycologia, 95(1), 2003, pp. 156-159.
© 2003 by The Mycological Society of America

Caeoma cassiopae sp. nov., a rust on Cassiope tetragona in the Canadian Rocky Mountains


Patricia E. Crane 1

     Northern Forestry Centre, Canadian Forest Service, Natural Resources Canada, 5320-122 Street, Edmonton, AB, T6H 3S5 Canada

Caeoma cassiopae sp. nov. (Uredinales) is described on the arctic–alpine shrub Cassiope tetragona. It was found in three locations in the Rocky Mountains of west-central Alberta, and is the first rust reported on the genus Cassiope. The sori resemble the uredinia of species in the genus Chrysomyxa. The host in the Ericaceae also suggests affinity with that genus. However, the spore morphology, studied by light and scanning electron microscopy, does not resemble known species of Chrysomyxa.

Key words: arctic–alpine plant, Chrysomyxa, Ericaceae, mountain heather, Uredinales, uredinia






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Copyright © 2003 by The Mycological Society of America.