. 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. 158 ASCOMYCETES. contain only coniJia, whereas those on Alnus-incana are said by Sadebeck to contain only ascospores, unless on very rare occasions. In the lower and higher Alps, although both species of alder are not infrequently found together, yet the Exoascus is found only on Alnus incana, and no species occurs on A. Fig. 53.—Exoascus alni-incanae in catkins of Alnus incana. Many
. 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. 158 ASCOMYCETES. contain only coniJia, whereas those on Alnus-incana are said by Sadebeck to contain only ascospores, unless on very rare occasions. In the lower and higher Alps, although both species of alder are not infrequently found together, yet the Exoascus is found only on Alnus incana, and no species occurs on A. Fig. 53.—Exoascus alni-incanae in catkins of Alnus incana. Many of the scales are developed as elongated red soft tongue-like structures, on which the asci^are produced as a whitish coating, (v. Tubeuf phot.) Exoascus epiphyllus Sad. (Ex. horcalis Joh.^) The witches'- brooni fungus of the white alder {Alnus incana.) The author- was the first to describe and figure this form of disease in 1884; and Sadebeck recently succeeded in pro- ^ K. Sven. Vet. Akad. 1885 and 1887. Tubeuf, Botan. CentralhL, - Tubeuf, Beitrdge z. Kenntniss d. Baumkrankheiten, 1888. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tubeuf, Karl, Freiherr von, 1862-. London Longman's, Green
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
