. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 357 thickened, bluntly conical, closely echinulate, brown, 20-35 x 12-16 fx, mixed with numerous capitate brownish paraphyses. III. Telia pulverulent, dark-brown, almost black. Spores con- sisting of two spherical cells, flattened at their point of union, the lower cell often being smaller and paler. Epispore uniformly. Fig. 258.âT. puuctata, urediniospores. After Holway. thick, chestnut-brown, thickly studded with short stout spines. Spores 30-45 x 17-25 m- Pedicels short, colorless. Heteroeciou
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 357 thickened, bluntly conical, closely echinulate, brown, 20-35 x 12-16 fx, mixed with numerous capitate brownish paraphyses. III. Telia pulverulent, dark-brown, almost black. Spores con- sisting of two spherical cells, flattened at their point of union, the lower cell often being smaller and paler. Epispore uniformly. Fig. 258.âT. puuctata, urediniospores. After Holway. thick, chestnut-brown, thickly studded with short stout spines. Spores 30-45 x 17-25 m- Pedicels short, colorless. Heteroecious: 0 and I on Hepatica and Anemone. II and III on Prunus sps., peach, almond, plum, cherry, apri- cot. Widely distributed in North America, Europe and Asia and apparently introduced into Australia about 1883. The acial stage is perennial. Uredinio.â ^pores have also been sho\^Ti to remain viable over winter. The peculiar character of the urediniospores has sometimes led this fungus to be mistaken for a Uromyces. In 1904, Tranzschel "^^ made cultures of the aecial stage from Anemone on various Prunaceous hosts. Arthur made similar inoculation from Hepatica in 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: 1504px × 1662px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
