Abstract
THE Torrey Botanical Club has performed a valuable service to mycologists in the publication of this excellent monograph of the Erysiphaceæ, a group of parasitic fungi causing the diseases known as white mildew, powdery mildew, blight, Mehlthau, blanc, &c. In their conidial or “oidium” stage they are common throughout the summer on various host-plants, such as roses, hops, vines, peas, maples, and many wild plants, giving a mealy appearance to the part infected; while in the later summer or autumn the perfect ascigerous form is produced in the form of dark brown or black spots, consisting of peritheces containing ascospores, and usually provided with characteristic appendages.
A Monograph of the Erysiphaceae.
By Ernest S. Salmon “Memoirs” of the Torrey Botanical Club. Vol ix., Pp. 292. (New York: 1900).
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B., A. A Monograph of the Erysiphaceae . Nature 63, 106 (1900). https://doi.org/10.1038/063106a0
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DOI: https://doi.org/10.1038/063106a0