Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 NECTRIA. 187 grown o'er in course of time by the activity of neighbour- ing living tissues, but the rapid development of the mycelium of this Ncdria prevents any such healing, and brings about death of more bark. As a result the so-called ' cankers' are Fig. 80.—Nectria ditissinia. Canker on a stem of Beech, (v. Tubeuf phot.)

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