. 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. Plant diseases; Parasitic plants. 260 ASCOMYCETES. larger and four smaller spores, the latter appearing to be rudi- mentary and incapable of germination. Scl. baccarum Schroet.^ (Britain).- The sclerotium disease of the bilberry (Vacc. 3^yrtillus). This varies from the other species in having round conidia incapable of germinating in water, in having more robust apothecial beakers, and in lacking rhizoids. The spores are simila
. 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. Plant diseases; Parasitic plants. 260 ASCOMYCETES. larger and four smaller spores, the latter appearing to be rudi- mentary and incapable of germination. Scl. baccarum Schroet.^ (Britain).- The sclerotium disease of the bilberry (Vacc. 3^yrtillus). This varies from the other species in having round conidia incapable of germinating in water, in having more robust apothecial beakers, and in lacking rhizoids. The spores are similar in number and arrangement to the preceding species. Scl. megalospora "VVor. The sclerotium disease of the crow- berry {Empctrum nigrum). This species is distinguished by the. Fio. 138.—Sclerotinia megalospora on Voxcinium vMginosum. Partiallj' withered leaf with a white conidial cushion on the mid rib. A, Conidial chains produced on a mycelium, resulting from an artificial culture of ascospores in plum-solution. B, Isolated conidium with remains of disjuiictors still attached. C, Twig with upper mummified berry. E, Ascospores ; one in its gelatinous envelope, the other giving off a germ-tube and sporidia. (After Woronin.) form of its conidia, and the manner of their germination; in the form of the sclerotium, and the absence of primordia; in the absence of rhizoids; and, particularly, in having large ascospores almost similar to each other. The " white berries " of the Vacciniaceae are distinct from the mummified berries caused by Sclerotinia? Scl. aucupariae Ludw. The mummified fruits of Pyrus Aucuparia, resulting from this fungus, were first observed by ^ Schroeter, Hedioigia, 1879 ; Woronin [loc. cit.). - Sclerotia of this species have been found in Scotland by Professor Traill, ^Magnus and Ascherson, Berichte d. deutsch. botan. Ges., 1889; also ZooL- botan. Ges., Vienna, Please note that these images are extracted from scanned page images that may
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
