Abstract
Abstract A description is provided for Puccinia allii . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Allium ampeloprasum, A. ascalonicum, A. cepa, A. chinense, A. fistulosum, A. porrum, A. sativum, A . schoenoprasum, A. tuberosum, A. ursinum and many other species of Allium . DISEASE: Rust on leaves and stems of chives, garlic, Japanese bunching or Welsh onion, leek, onion, rakkyo and shallot. Leaves may be killed in severe infections. GEOGRAPHICAL DISTRIBUTION: Africa, Asia, Australasia, Europe, North and South America (CMI Map 400, 1963 and Herb. IMI). TRANSMISSION: The pathogen may overwinter in the uredio stage on wild plants in America. There is also a record of interception in the United States on garlic imported from Israel (37: 760). Records of seed transmission on leek and garlic have been made (11: 255; 30: 401) but this is thought to be of minor importance (Noble et al. , 1958).
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