Phragmidium rubi-idaei. [Descriptions of Fungi and Bacteria].
Abstract A description is provided for Phragmidium rubi-idaei. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Rubus idaeus (raspberry) and a few wild Rubus species. DISEASE: Cane rust or western yellow rust of raspberry, infecting canes, leaves, petioles and fruiting laterals. GEOGRAPHICAL DISTRIBUTION: Widespread throughout temperate areas in North America, Europe, U.S.S.R. and Japan. Also in Australia and New Zealand. TRANSMISSION: By wind-blown spores. Basidiospores arise from teliospores on dead leaves on the ground in early spring and infect through both leaf surfaces; aeciospores and urediospores apparently infect only through the lower surface (Zeller & Lund, 1934).