. Plant studies; an elementary botany. Botany. 272 PLANT STUDIES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sporophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy mild
. Plant studies; an elementary botany. Botany. 272 PLANT STUDIES finally deadened spots on the leaves, where the tissues have been killed. From this internal mycelium numerous sporophores arise, coming to the surface of the host and securing the scattering of their spores, which fall upon other leaves and germinate, the new mycelia pene- trating among the tissues and begin- ning their ravages. The sporophores, af- ter rising above the surface of the leaf, branch freely; and many of them rising near together, they form little velvety patches on the surface, suggesting the name " downy ;. Fig. 239. A branch of Peronospora in contact with two celle of a host plant, and sending into them its large haustoria.—After 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
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Keywords: ., bookauthorcou, bookcentury1900, bookdecade1900, booksubjectbotany
