Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 394 UREDINEAE. marked swelling on one side only (Fig. 227). In the needle- form the swelling results from increased growth of the rind, with a simultaneous decrease of growth of the wood; in the twig-form the growth of both wood and rind is much increased. With the twig-inhabiting form the medullary rays and wood- parenchyma increase, and at the same time become


Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 394 UREDINEAE. marked swelling on one side only (Fig. 227). In the needle- form the swelling results from increased growth of the rind, with a simultaneous decrease of growth of the wood; in the twig-form the growth of both wood and rind is much increased. With the twig-inhabiting form the medullary rays and wood- parenchyma increase, and at the same time become filled with mycelium (Fig. 228); whereas with the other form the medullary rays are at most only somewhat broader, and no mycelium can be found in the wood. The greatly swollen rind in the case


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