Guignaridia bidwellii. [Descriptions of Fungi and Bacteria].
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Abstract A description is provided for Guignaridia bidwellii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On leaves, fruits and stems of Ampelopsis, Cissus, grapevine (Vitis vinifera), Vitis spp., Parthenocissus quinquefolia (Virginia creeper), P. tricuspidata (Boston ivy). DISEASE: Black rot of grapevine. GEOGRAPHICAL DISTRIBUTION: Widespread with main host (CMI Map 81, ed. 3, 1976); absent from Australasia, Scandanavia, UK, W. USA. TRANSMISSION: Conidia are water-borne (58, 1876) and ascospores air-borne after rain (57, 4574).
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