. Fio. 108.—Mamiana fimhriata on Carpinus Bclulas. Leaf of Hornbeam seen on lower surface. Stroma (enlarged), with the long black necks of the perithecia projecting from the ruptured leaf-epidermis, (v. Tubeuf del.) Valsa. A stroma is generally present, but is of very variable appear- ance ; embedded in it are the perithecia, with only their beak- like mouths projecting. The spores are hyaline or light-brown, unicellular, and generally bent. Xo paraphyses are present. Valsa oxystoma This causes disease and death of branches of A/iws 'cirulis in the Alps. The symptoms are withering and
. Fio. 108.—Mamiana fimhriata on Carpinus Bclulas. Leaf of Hornbeam seen on lower surface. Stroma (enlarged), with the long black necks of the perithecia projecting from the ruptured leaf-epidermis, (v. Tubeuf del.) Valsa. A stroma is generally present, but is of very variable appear- ance ; embedded in it are the perithecia, with only their beak- like mouths projecting. The spores are hyaline or light-brown, unicellular, and generally bent. Xo paraphyses are present. Valsa oxystoma This causes disease and death of branches of A/iws 'cirulis in the Alps. The symptoms are withering and drying up of single branches on an otherwise green bush. This disease causes severe loss in the Tvrol, ^ Titres et (ravanx scientifiqnes, 1890. -V. Tubeuf. "Zwei Feinde d. Alpenerle," For-stlicli-iia/unciss. Ztilschrijt, 1S92.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
