. Lessons in botany. Botany. FUNGI: WHEAT RUST. 133 For a fuller study of the wheat rust and of other fungi see the author's larger " Elementary Botany," Chapters XX, Wheat rust. Fig. 113- Section through leaf of barberry at point affected with the cluster-cup stage of the wheat rust; spermagonia above, aecidia below. (After Marshall-Ward.) Synopsis. A parasite on grains, grasses, and on the barberry. Vegetative part of plant; mycelium growing within the tissues of the host. Fruiting part of the plant. 1st. Red rust (one-celled spores in pustules on blades and stems of the whea
. Lessons in botany. Botany. FUNGI: WHEAT RUST. 133 For a fuller study of the wheat rust and of other fungi see the author's larger " Elementary Botany," Chapters XX, Wheat rust. Fig. 113- Section through leaf of barberry at point affected with the cluster-cup stage of the wheat rust; spermagonia above, aecidia below. (After Marshall-Ward.) Synopsis. A parasite on grains, grasses, and on the barberry. Vegetative part of plant; mycelium growing within the tissues of the host. Fruiting part of the plant. 1st. Red rust (one-celled spores in pustules on blades and stems of the wheat). 2d. Black rust (two-celled spores in pustules on the blades and stems of the wheat). F f rm J 3^* Cluster cup (one-celled spores in chains within a structure called a peridium, or cup on leaves and stems of barberry). 4th. Spermagonia (small flask-shaped bodies accompanying the cluster cups, of un- known function). Material.—Dried stalks of wheat or oats with the black-rust spots ; dried leaves with the red-rust spots ; leaves of the barberry with the cluster cups. (If the barberry leaves cannot be obtained, another species of cluster cup may be used to illustrate the tecidial stage, but it should be remembered that other cluster cups are not connected with the life history of the wheat rust.) For satisfactory studies of the cluster-cup stage, sections through the cup should be made from fresh material, or sections already made may be pur- chased from the supply companie$. ^ Microscope, 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and company
Size: 2012px × 1242px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectbotany
