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 432 I5ASIDI0MYCETES. ovor it ii new hyuicniuiu ; tliis is continued for some time so that the sporopliore consists of successive layers, and the spiny outgrowths hecome much thickened. Infection, as was experi- mentally shown by Hartig, takes place on wounds. The wood-destruction, consisting of a white-rot, was studied by Hartig, chiefly on the oak and beech. It begins by the Fig. 262. — Poli/porus
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 432 I5ASIDI0MYCETES. ovor it ii new hyuicniuiu ; tliis is continued for some time so that the sporopliore consists of successive layers, and the spiny outgrowths hecome much thickened. Infection, as was experi- mentally shown by Hartig, takes place on wounds. The wood-destruction, consisting of a white-rot, was studied by Hartig, chiefly on the oak and beech. It begins by the Fig. 262. — Poli/porus igniarius. Causiug death of a White Aider plantation at Petneu, Stanzer Thai, Tyrol. The stems bear sporophores, and die from above downwards, (v. Tubeuf phot.) appearance of yellowish longitudinal bands (not white as with Sterenm ), and extends gradually till the wood becomes uniformly yellow. The mycelium causes the inner layers of the cell-walls to swell gelatinously without previous transfor- mation into cellulose, and finally to dissolve out leaving the middle lamellae longest intact.
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