. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 150 PUCCINIA faintly granulated, chestnut-brown, 80—42x21—27/a; epispore thin; pedicels hyaline, short or nearly as long as the Fig. 102. P. LeontodontU. Teleutospores and uredospore, on L. autumnalis. On Leontodon autumnalis, L. hispidus. August, September. Not uncommon. (Fig. 102.) The teleutospores of this species are said to be more than usually variable ; sometimes the sori, according to Sydow, are seated on coloured spots, but more often the spots are wanting. Up to the present, no experimental cu
. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 150 PUCCINIA faintly granulated, chestnut-brown, 80—42x21—27/a; epispore thin; pedicels hyaline, short or nearly as long as the Fig. 102. P. LeontodontU. Teleutospores and uredospore, on L. autumnalis. On Leontodon autumnalis, L. hispidus. August, September. Not uncommon. (Fig. 102.) The teleutospores of this species are said to be more than usually variable ; sometimes the sori, according to Sydow, are seated on coloured spots, but more often the spots are wanting. Up to the present, no experimental cultures appear to have been carried out with this Pv/idida, and it is separated from P. 'Hieraeii mainly because it is parasitic upon a different genus. I have found it mostly upon old yellowing leaves. Distribution : Europe generally. 25. Puccinia Tragopogi Corda. ^cidium Tragopogi Pers. Syn. p. 211. ^. Tragopogonis Cooke, Handb. p. 537 ; Micr. Fung. p. 195, pi. 1, f. 1—3. Puccinia Tragopogi Corda, Icon. v. 50. Plowr. Ured. p. 197. Sacc. Syll. vii. 668 Sydow, Monogr. i. 167. Fischer, Ured> Schweiz, p. 215, f. 166. P. sparsa Cooke, Handb. p. 498 ; Micr. Fung. p. 205. Spermogones. Epiphyllous, honey-coloured, sometimes absent. ^cidiospores. ^cidia hypophyllous, without spots, scat- tered uniformly over the whole surface, and on other green parts, cup-shaped, with a white torn revolute margin; spores globose to ellipsoid, densely verrucose, pale-orange, 20—30 x 18—24/i, with three 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 Grove, W. B. (William Bywater), 1848-1938. Cambridge, University Press
Size: 1891px × 1321px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambr, bookyear1913
