Phellinus robustus. [Descriptions of Fungi and Bacteria].
Abstract A description is provided for Phellinus robustus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Mainly on Quercus, also recorded on Abies, Acacia, Acer, Betula, Buxus, Cassinia, Castanea, Cereus, Eleagnus, Eucalyptus, Fagus, Hippophae, Juglans, Leptospermum, Nothofagus, Opuntia, Picea, Pinus, Pistacia, Pittosporum, Pseudotsuga, Robinia, Salix, Syringa, Taxus, Thuja and Tsuga. DISEASE: Yellow trunk rot of oak. A whitish to pale yellowish rot, mainly confined to the sapwood but can also extend to the heartwood, surrounded by a narrow dark brown zone (17: 358). Also causes excrescences on the trunk. GEOGRAPHICAL DISTRIBUTION: Asia (Japan, U.S.S.R.), Australasia & Oceania (Australia, Hawaii, New Zealand); Europe (Czechoslovakia, France, Germany, Great Britain, Hungary, Netherlands, Norway, Spain, Sweden, Switzerland); North America (Canada, U.S.A.). TRANSMISSION: By air-borne spores. Infection occurs through trunk wounds. The perennial carpophore may persist for 15-20 yrs.