. Fig. lOS.— fihibviala on Carpinua Betx'.lvs. 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 Aim's viridis in the Alps. The symptoms are withering an

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. Fig. lOS.— fihibviala on Carpinua Betx'.lvs. 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 Aim's viridis 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, 1 Titres et travaux scientijiques, 1890. ^v. Tubeuf. " Zwei Feinde d. A\]yGner\e,'' ForstUch-natw-H-i'iS. Zeitschrijt, 1892.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi