. Foundations of Botany. Botany. 260 FOUNDATIONS OF BOTANY red rust. A little later the black spores appear, produced from the same mycelium. This growth is chiefly upon the stems and A B Fig. 191. — Spore-Formation in Potato-Blight (Phytophthora infestans). A, a well-developed group of stalks, proceeding from a mass of mycelium inside the leaf and escaping through a stoma; B, a young, unbranched stalk, h, hyphse of mycelium ; o, stoma; s, spore. (Both figures greatly magnified, B more than A.) 311. Cluster-Cup Stage. — Note with the naked eye and with a magnifying glass the appearan
. Foundations of Botany. Botany. 260 FOUNDATIONS OF BOTANY red rust. A little later the black spores appear, produced from the same mycelium. This growth is chiefly upon the stems and A B Fig. 191. — Spore-Formation in Potato-Blight (Phytophthora infestans). A, a well-developed group of stalks, proceeding from a mass of mycelium inside the leaf and escaping through a stoma; B, a young, unbranched stalk, h, hyphse of mycelium ; o, stoma; s, spore. (Both figures greatly magnified, B more than A.) 311. Cluster-Cup Stage. — Note with the naked eye and with a magnifying glass the appearance of the cluster-cups upon the bar- berry leaf. Fresh specimens should be used, if available. Note whether the leaf is changed in form or color in any part occupied by the fungus. Note the number of cups in a cluster, the position on the leaf (which surface?), the form and size, especially the 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn & company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
