. Fig. 81.—Nectria ditissima. Canker on Huzel. The l^lace of infection, a partially broken branch-fork. produced. The mycelium at first gives off* tiny unicellular conidia on the bark, then later white cushions bearing fine conidiophores, from which are abjointed multicellular conidia, shaped like a sickle. Infection is brought about by the germination of spores or conidia on wounded parts of the

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi