. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON 193 On Angelica silvestris. Not common. Uredospores, June and July; teleutospores, July—November. (Fig. 140.) Distinguished especially by the very bright yellow primary uredo-sori, and by the slightly larger uredospores than in allied species. Semadeni proved that it would grow also on Archangelica, but not on sEthusa Cynapium or Peucedanum palustre. The primary uredo-sori should be compared with the eecidia of P. Smyrnii. P. Apii is also closely allied, but differs in the posse
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON 193 On Angelica silvestris. Not common. Uredospores, June and July; teleutospores, July—November. (Fig. 140.) Distinguished especially by the very bright yellow primary uredo-sori, and by the slightly larger uredospores than in allied species. Semadeni proved that it would grow also on Archangelica, but not on sEthusa Cynapium or Peucedanum palustre. The primary uredo-sori should be compared with the eecidia of P. Smyrnii. P. Apii is also closely allied, but differs in the possession of a true cup-shaped secidium. Distribution : Central and Northern Europe, Turkestan. 65. Puccinia bullata Wint. Uredo bullata Pers. Obs. Myc. i. 98 P. bullata Wint. Pilze, p. 191 Sacc. Syll. vii. 634 Sydow, Monogr. i. 403 Fischer, Ured. Schweiz, p. 119, f. 91 a. P. Umbelliferarum and P. bullaria, Spermogones. Pale yellowish. Uredospores. Primary sori chiefly on the swollen nerves and petioles, elongated, as much as 3 cm. long, dark-cinnamon, secondary hypophyllous or rarely epiphyllous, scat- tered, minute, punctiform, brown; spores globose to obovate, echinulate, brown, apex more or less thickened, 25—40 x 18—28 /a, with three or four germ-pores with swollen caps. Teleutospores. Sori similar, often confluent on the stems, long covered by the epidermis, blackish-brown; spores oblong to obovate, rounded above, scarcely thickened, hardly constricted, slightly narrowed below, smooth, uniformly brown, 30—45 x 18—24 fi; pedicels hyaline, rather stout, deciduous. On Peucedanum palustre. Shrapwick Bay, Somerset, 1883 (H. B. Waterfall). (Fig. 141.) This species is placed temporarily in the collective group, P. bullata Wint. All the forms which were included under that head by Plowright are now separated on morphological or biological grounds, but nothing is known as yet about the Puccinia on Peucedanum palustre, from the latter point of view. I
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