. Fio. 108.—MiUdiipxorn betulhin. Teleutospore-sorus, with many of the spores producing promj-celia and sporidia (x). i\ Mycelium ; p, parenchyma ; c, portion of ruptured epidermis. (After Tulasne.) succeeded in re-infecting Betula alba from Caeoina laricis. Eostrup obtained Cacoma by infecting Mercurialis with Mel. trcmulae; yet this may have happened because two different species of Mdamiisora occurred on the aspen leaves. Klebahn ^ was successful in infesting Populus tremula with Gaeoma laricis but did not succeed W'ith the birch. ^R. Hartig, Allef/em. Fo7:sL %i. Jar/d-zeiiung,

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. Fio. 108.—MiUdiipxorn betulhin. Teleutospore-sorus, with many of the spores producing promj-celia and sporidia (x). i\ Mycelium ; p, parenchyma ; c, portion of ruptured epidermis. (After Tulasne.) succeeded in re-infecting Betula alba from Caeoina laricis. Eostrup obtained Cacoma by infecting Mercurialis with Mel. trcmulae; yet this may have happened because two different species of Mdamiisora occurred on the aspen leaves. Klebahn ^ was successful in infesting Populus tremula with Gaeoma laricis but did not succeed W'ith the birch. ^R. Hartig, Allef/em. Fo7:sL %i. Jar/d-zeiiung, 1885. -Plowright, " Impfversuche in. Rostpilzen," Zeitarhri/t f. Pjlanztnkrankheiten, 1891. •'Klebahn, Zeitschrift f. Pflanzenh-ankhtiten, 1894.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi