. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON COMPOSITyE 155 29. Puccinia Sonchi Rob. yEcidimn Sonchi ; Plowr. Ured. p. 266. Puccinia Sonchi Rob. in Desm. Ann. Sci. Nat. ser. 3, xi. 274. Grove, Sci. Gossip, 1885, p. 9, f. G—9. Plowr. Ured. p. 196. Sacc. Syll. vii. 638. Sydow, Monogr. i. [Spennogones. Obtained artificially on *S'. aruensis by Tranz- schel.] Uredospores. Sori generally hypophyllous, on the stem collected in small oblong patches 4—5 mm. long, on yellowish spots, scattered or gregarious, minute, at first covered by the epider
. The British rust fungi (Uredinales), their biology and classification. Uredineae. ON COMPOSITyE 155 29. Puccinia Sonchi Rob. yEcidimn Sonchi ; Plowr. Ured. p. 266. Puccinia Sonchi Rob. in Desm. Ann. Sci. Nat. ser. 3, xi. 274. Grove, Sci. Gossip, 1885, p. 9, f. G—9. Plowr. Ured. p. 196. Sacc. Syll. vii. 638. Sydow, Monogr. i. [Spennogones. Obtained artificially on *S'. aruensis by Tranz- schel.] Uredospores. Sori generally hypophyllous, on the stem collected in small oblong patches 4—5 mm. long, on yellowish spots, scattered or gregarious, minute, at first covered by the epidermis which is raised over them in a hemispherical vesicle, then pierced at the top but never widely open, yellowish, surrounded by a dark-broAvn line of paraphyses; spores more or less oblong or obovate, densely verrucose, with a very thick epispore, contents oily, yellowish, 24—38 x 15—21 Fig. 107. P. Sonchi. a, the line of dark-browu iiaraphyses surrounding tlie uredo-sori; 6, a, pale-brown parapbysis; c, a uredospore; all on S. oleraceus. x 600. [Teleutospores. Sori hypophyllous, rarely on the stems, on irregular brownish spots, more compact, rounded-pulvinate, scattered or aggregated, confluent when on the stem, covered by the epidermis, black; spores ovate or oblong, rounded or truncate (rarely attenuated) above, thickened (3—8/x), con- stricted, rounded below, smooth, pale-brown, 30—60 x 20—30/a ; pedicels somewhat long, brownish, persistent; mesospores ovate,. 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, William Bywater. Cambridge, Univ. Press
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