. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 408 FUNGOUS DISEASES OF PLANTS is one of the most common, yet it may not be considered of any special economic importance. The aecidiospores are almost twice as long as broad, 40 X 17-26 p. The uredospores are subspherical, and the teleutospores are conspicuous by their long, hyaline, and relatively thick pedicels, papillate apex, red-brown color, and verru- cose outer Fig. 200. jEcidial Stage of the Grain Rust on Barberry XIII. BLACK RUST OF GRAIN Puccinia graminis Pers. Bo
. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 408 FUNGOUS DISEASES OF PLANTS is one of the most common, yet it may not be considered of any special economic importance. The aecidiospores are almost twice as long as broad, 40 X 17-26 p. The uredospores are subspherical, and the teleutospores are conspicuous by their long, hyaline, and relatively thick pedicels, papillate apex, red-brown color, and verru- cose outer Fig. 200. jEcidial Stage of the Grain Rust on Barberry XIII. BLACK RUST OF GRAIN Puccinia graminis Pers. Bolley, H. L., and Pritchard, F. J. Rust Problems. N. Dak. Agl. Exp. Sta. Built. 68: 607-672. figs. i-jo. 1906. Carleton, M. A. Cereal Rusts of the United States. Div. Veg. Phys. and Path., U. S. Dept. Agl. Built. 16: 1-73. pis. 1-4. 1899. De Bary, A. Neue Unters. iiber die Uredineen, insb. d. Entw. der Puccinia graminis u. d. Zusammenhang desselben mit Aecidium Berberidis. Monats- ber. K. Akad. d. Univ. Berlin (1865): 15-49. pi- ZI- Eriksson, J. Neue Unters. iiber d. specialisirung Verbreitung u. Herkunft des Schwarzrostes (Puccinia graminis Pers.) Jahrb. f. wiss. Bot. 29: 499-524. 1896. Eriksson, J., und Henning, E. Die Getreideroste, /. c. McAlpine, D. The Life-history of the Rust of Wheat. Dept. Agl. Victoria Built. 14: 1891. Olive, E. W. Rusts of Cereals. S. Dak. Agl. Exp. Sta. Built. 109: 1-20. figs- T-5- r9°8- Ward, H. Marshall. Illustrations of the Structure and Life-history of Puc- cinia graminis, the fungus causing the " Rust" of Wheat. Ann. Bot. 2: 217-222. pis. II, 12. 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 Duggar, Benjamin M. (Benjamin Minge), 1872-1956. Boston ; New York : Ginn
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