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 AGARICUS. 457 rhizomorphs distribute the fungus in the earth and other dead substrata, as well as bore into the bark of healthy Conifers. This parasite attacks not only the indigenous Conifers (spruce, silver fir, pine, larch, and juniper), but also the introduced forms—Weymouth pine, Douglas fir, Pinus rigida, Abies Pichta, Picea sitchensis, various Cuirressincae, etc. It also seems to attack broad-l

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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 AGARICUS. 457 rhizomorphs distribute the fungus in the earth and other dead substrata, as well as bore into the bark of healthy Conifers. This parasite attacks not only the indigenous Conifers (spruce, silver fir, pine, larch, and juniper), but also the introduced forms—Weymouth pine, Douglas fir, Pinus rigida, Abies Pichta, Picea sitchensis, various Cuirressincae, etc. It also seems to attack broad-leafed trees, at least as a wound parasite. In regard to the interesting structure of the rhizomorphs, and the characteristic mode of wood-destruction caused by Fig. 2S6.— Sporophore developed from a rhizomorph-strand; the other branch bears arrested sporophores. (After R. Hartig.)

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