Abstract
Abstract A description is provided for Lophodermium pini-excelsae . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pinus ayacahuite, P. banksiana, P. cembra, P. excelsa, P. kesiya, P. koraiensis, P. longifolia, P. palustris, P . parviflora, P. patula, P. pentaphylla, P. peuce, P. pumila, P. strobus, P. tueda, P. wallichiana . DISEASE: Needle cast of pines. Ascocarps of this species occur predominantly on dead needles in the litter; they may also, however, occur on dead needles still attached to twigs, including twigs which have died because of suppression. The pathogenic status of this species is not clear, but it is important to distinguish it from other more strongly pathogenic pine inhabiting species of the same genus, such as L. seditiosum Minter, Staley & Millar ( CMI Descriptions 568). GEOGRAPHICAL DISTRIBUTION: Asia (India: Himachal Pradesh, Jammu & Kashmir; Japan, West Pakistan), Europe (Belgium, Great Britain, Ireland), North America (Canada: Ontario). TRANSMISSION: By air-borne ascospores in wet or humid weather.
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