. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 462 BASIDIOMYCETES. scales arranged regulnrly in concentric lines. The stools break out from living stems through cracks in the bark or from wounds, those made by wood-peckers. The fir-wood, normally white, assumes, when diseased, a yellow or honey-colour, more or less like the sporophore, while here and there, parts may become light brown. The hyphae grow in all direc- tions, but especially as white strands up
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. 462 BASIDIOMYCETES. scales arranged regulnrly in concentric lines. The stools break out from living stems through cracks in the bark or from wounds, those made by wood-peckers. The fir-wood, normally white, assumes, when diseased, a yellow or honey-colour, more or less like the sporophore, while here and there, parts may become light brown. The hyphae grow in all direc- tions, but especially as white strands up and down the year-rings, while others in horizontal and vertical direction break up the wood into irregular patches (Fig. 290). * In the final stages of destruction the wood will be found A laminated into its separate year-rings %. and very much broken up into irregular \ pieces (Fig. 291). I' , The sporophores of this Afjaricus are not uncommon protruding from l)ark- cankers caused by Aecidium clafinvm, and its mycelium assists in the destruc- tion of the ; '^â H^'i FlO. 292.âAgaricus adiposiis and Polyporum Hdrtigii. Destruc- tion of Fir-wood. The boundary of the regions affected by the two fungi is formed by a verj- dark line of demarkatiou. To the right the destruction is that produced by Hartigii, to the left by AgarirvK ^. (v. Tubeuf phot.) Agaricus (Pholiota) squarrosus (INIiill.). On living and deail stems of broad-leaved trees. (Britain.) Ag. (Ph.) destruens (Brond.). On living and dead steins of poplar. (Britain.) Ag. (Ph.) aurivellus (Batsch.). On living and dead stems of broad-leaved trees. (Britain.) " FUNGI ; The fungi placed here have life-histories which as yet Iiave not been completely investigated, most of them being known only in the form of pycnidia or conidia. The number of species was at one time much larger, but it is gradually being re- duced as the forms are proved to be stages in the life of some
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
