. The fungi which cause plant disease . Plant diseases; Fungi. 378 THE FUNGI WHICH CAUSE PLANT DISEASE long covered by the epidermis. Spores broadly oval, often almost globose, slightly constricted, apex not thickened, thickly vemicose, brown, 26^8 x 30-35 ii. Pedicels short, colorless, deciduous. Mycelium localized. An opsis-type on cultivated Tragopogon. Urediniospores are unknown. The teliospores are often unicellular and are very variable. P. tarazaci Plow, is common on dandelion. P. cichorii Pass, is a hemi-type on Cichorium. P. isiacse on Phragmitis is thought to be. Fio. 274.—P. gramini
. The fungi which cause plant disease . Plant diseases; Fungi. 378 THE FUNGI WHICH CAUSE PLANT DISEASE long covered by the epidermis. Spores broadly oval, often almost globose, slightly constricted, apex not thickened, thickly vemicose, brown, 26^8 x 30-35 ii. Pedicels short, colorless, deciduous. Mycelium localized. An opsis-type on cultivated Tragopogon. Urediniospores are unknown. The teliospores are often unicellular and are very variable. P. tarazaci Plow, is common on dandelion. P. cichorii Pass, is a hemi-type on Cichorium. P. isiacse on Phragmitis is thought to be. Fio. 274.—P. graminis, telium and germinating teliospore. After Carleton. the telial stage of M. brassicae on cabbage. ^*^ P. fagopyri Barcl. is found on buckwheat. P. menthsB Pers. *» I. .^cia with peridia immersed, flat, opening irregularly, edges torn; principally on the stems, which are much swollen, more rarely on concave spots on the leaves. Spores subglobose or polygonal, coarsely granular, pale-yellowish, 17-26 x 26-35 li. II. Uredinia small, roundish, soon pulverulent and confluent, cinnamon-brown. Spores irregularly rounded or ovate, echinu- late, pale-brown, 17-28 x 14-19 /n- III. TeUa black-brown, roundish, pulverulent. Spores ellip- tical, oval, or subglobose, central constriction slight or absent, apex with a hyaline or pale-brown papilla, verrucose, deep-brown, 26-35 X 19-23 n. Pedicels long, delicate, colorless. An autoecious eu-type on many 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 Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
Size: 1997px × 1251px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
