. The essentials of botany. Botany. 194 BOTANY. aecidiospores, and of tlie second uredospores, while tie tliird name is retained as the scientific name of the genus. The sporids cannot ordinarily produce rust directly upon wheat, probably because of the toughness of the epidermis ; but it has been. Fio. 114.—Wheat-rust. A and B, Black-rust spores germinating and producing sporids, sp; C, fragment of a Barberry-leaf with a spond, sp. germinating and penetrating the epidermis; I), showing manner germination of Red-rust spore. All highly magnified. of shown that when sporids germinate upon very y
. The essentials of botany. Botany. 194 BOTANY. aecidiospores, and of tlie second uredospores, while tie tliird name is retained as the scientific name of the genus. The sporids cannot ordinarily produce rust directly upon wheat, probably because of the toughness of the epidermis ; but it has been. Fio. 114.—Wheat-rust. A and B, Black-rust spores germinating and producing sporids, sp; C, fragment of a Barberry-leaf with a spond, sp. germinating and penetrating the epidermis; I), showing manner germination of Red-rust spore. All highly magnified. of shown that when sporids germinate upon very young leaves of wheat- seedlings they penetrate the epidermis and then soon give rise to a red-rust stage. In such cases the cluster-cup stage is omitted. Pos- sibly the rusts upon the spring wheat, oats, and barley in the Mis-. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : Holt
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
