. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. The markings on the teleutospores are perfectly invisible when wet. This species has no connection with Caeoma Saxifragae which is also found on S. granulata. I have specimens from both Scotland and Ireland, the latter on S. umbrosa from Clare Island, and the former on S. stellaris from Lochnagar. Fig. 160. P. Saxifragae. Te- leutospores, a, on .S'. umbrosa (Ireland), b, on S. stellaris (Lochnagar). Distribution : Central and Western 84. Puccinia Pazschkei Dietel. Puccinia Pazschkei Di
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. The markings on the teleutospores are perfectly invisible when wet. This species has no connection with Caeoma Saxifragae which is also found on S. granulata. I have specimens from both Scotland and Ireland, the latter on S. umbrosa from Clare Island, and the former on S. stellaris from Lochnagar. Fig. 160. P. Saxifragae. Te- leutospores, a, on .S'. umbrosa (Ireland), b, on S. stellaris (Lochnagar). Distribution : Central and Western 84. Puccinia Pazschkei Dietel. Puccinia Pazschkei Diet, in Hedwig. 1891, p. 103 ; Ber. deutsch. Bot. Gesell. ix. 44, pi. 3, f. 15. Sacc. Syll. xi. 185. Sydow, Monogr. i. 503, f. 411. Fischer, Ured. Schweiz, p. 148, f. 113. Trans. Brit. Myc. Soc. iii. 123. Teleutospores. Sori epiphyllous, about \—1 mm. wide, scattered or more often in orbicular groups 2—3 mm. diam., a few occasion- ally hypophyllous, surrounded by the swollen and torn epidermis, pulverulent, dark reddish-brown; spores ellipsoid or oblong, rounded at both ends, very slightly thickened above or with a minute flat papilla, gently constricted, faintly and irregularly verruculose, pale clear-brown, 25—35 x 13—18fi; pedicels hyaline, short, deciduous; a few mesospores intermixed. On leaves of Saxifraga longifolia, Kew Gardens (G. Massee), Journ. Bot. xlvi. 152. On a hybrid between S. Cotyledon and S. aizoon, Sutton Coldfield, April and May, 1911—12. (Fig. 161.) A parasite doubtless introduced into this country with the plants. In the Sutton example, the sori form two or three perfectly round groups Fig. 161. P. Pazschkei. Te- leutospores and mesospore, (Sutton Coldfield).. 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
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