Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 Fig. U(i.—Ront-system of a Silver Fir overgrown and killed by the mycelium of Rliizina uiululala. (After Hartig.) Fig. 147.—Ascospores of Rhizina. a, As taken from the ascus; b, 24 hours after sowing; c, 48 hours after sowing ; d, the spore of c enlarged. (After Hartig.) filled up. Masses of fungoid pseudoparenchyma are frequently formed between the dead and diseased tissues. Strands of the nature
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 Fig. U(i.—Ront-system of a Silver Fir overgrown and killed by the mycelium of Rliizina uiululala. (After Hartig.) Fig. 147.—Ascospores of Rhizina. a, As taken from the ascus; b, 24 hours after sowing; c, 48 hours after sowing ; d, the spore of c enlarged. (After Hartig.) filled up. Masses of fungoid pseudoparenchyma are frequently formed between the dead and diseased tissues. Strands of the nature of Rhizoctonia emerge from the diseased roots, many of them carrying thread-like processes, at the extremity of which an oil-drop is secreted and escapes on rupture of the apex. According to Hartig very tiny conidia are abjointed from the mycelium. De la Boulage and Prillieux have botli come to the conclusion that 'la maladie du rond ' of Pinus sylvestris and P. maritima is the same disease as the ' ring-disease ' caused by Bhizina. ' Bull, de la soc. de-s Afjric. de France, 1880.
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