. The British rust fungi (Uredinales), their biology and classification. Uredineae. UREDINOPSIS 379 UREDINOPSIS Magnus. Teleutospores solitary, extracellular, hyaline, septate. Uredo- sori subepidermal, with a distinct peridium; uredospores hyaline, pedicellate, without germ-pores. On Ferns. This genus is distinguished from all others by the fact that the teleutospores are dispersed without order among the cells of the mesophyll. There are three known forms of spores, which seem to occur simultaneously, and not in a lixed order of succession as in most pleomorphic Uredinales. It is one of the
. The British rust fungi (Uredinales), their biology and classification. Uredineae. UREDINOPSIS 379 UREDINOPSIS Magnus. Teleutospores solitary, extracellular, hyaline, septate. Uredo- sori subepidermal, with a distinct peridium; uredospores hyaline, pedicellate, without germ-pores. On Ferns. This genus is distinguished from all others by the fact that the teleutospores are dispersed without order among the cells of the mesophyll. There are three known forms of spores, which seem to occur simultaneously, and not in a lixed order of succession as in most pleomorphic Uredinales. It is one of the lowest genera from the point of view of organisation; and its cytological investigation would doubtless yield a rich harvest of new ideas. Not yet discovered in Britain. Uredinopsis filicina Magn. Protomyces ^filicinus Niessl, in Eab. Fung. Europ. no. 1659, 1873. Uredo Polypodii var. Phegopteris Winter, Pilze, p. Sacc. Syll. vii. 858. Uredinopsis filicina Magn. Atti Congress. Bot. Internaz. 1892, p. 167. Fischer, Ured. Schweiz, \). 476, f. 310, 311. Uredospores. Sori hypophyllous, small, roundish, thickly scattered, yellowish-brown, of two kinds—(1) smaller, about. Fig. 284. U. Jilicimi. On P. FhegojJteris. a, uredospores = ? aaeidiospores; h, uredospores (no. 2) and paraphysis; c, teleutospores. From a German specimen, issued by Sydow. \ mm. diara., flattish, semi-transparent, always situated beneath a stoma, surrounded by a rather tough peridium, rupturing above; spores more or less obovate-polygonal, on slender. 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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