Abstract
Urediniospores ofCronartium ribicola J. C. Fisch. exRabenh. were observed within the petiole ofRibes petiolare L. These spores occurred internal to xylem tissues within the region of undifferentiated parenchyma cells (pith). Fungal tissues were sparse and fully differentiated sori were absent.
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Research Plant Pathologist and Biological Laboratory Technician, USDA Forest Serv., Intermountain Forest and Range Exp. Sta., Ogden, Utah, stationed in Moscow, Idaho83843, at Forestry Sciences Laboratory, maintained in cooperation with the University of Idaho.
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Harvey, A.E., Woo, J.Y. The occurrence of urediniospores of Cronartium ribicola within the petiole of Ribes petiolare. Mycopathologia et Mycologia Applicata 50, 163–165 (1973). https://doi.org/10.1007/BF02049954
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DOI: https://doi.org/10.1007/BF02049954