174 British Urcdinece and Ustilaginco'. 



Puccinia paludosa. Plow, 



^cidiospores — Pseudoperidia irregularly clustered on the leaves, 

 petioles, peduncles, stems, and sometimes even on the calices, 

 sub-immersed, with torn white edges. Spores subglobose, 

 echinulate, hyaline, with orange contents, 15-2S X io-i6/t. 



Uredospores — Sori small, oval or elongated, on yellowish spots, 

 light brown, soon naked, and pulverulent. Spores round, 

 rarely oval, brown, rough with small, sharply pointed, not 

 very numerous warts, 20-25/x. 



Teleutospores — Sori small, oval or elongate, rarely roundish, often 

 in linear series, black, naked. Spores, upper cell rounded and 

 thickened above, often obliquely, lower cell subcylindrical or 

 cuneiform, constriction rather marked, smooth, dark brown, 

 50-60 X 1S-20/X. Pedicels rather long, brownish, persistent. 



Synonyms. 



JEcidiinn pcdicidaris. Libosch., " Mem. de Moscou," vol. v. 

 p. 76, t. 5, fig. I. Berk., Ann. Nat. Hist., No. 254. Cooke, 

 " Hdbk.," p. 544; " Micro. Fungi," 4th edit., p. 199. 



Puccinia car ids. Rabh., Fiing. Europ., No. 1589. 



Exsiccati. 



Cooke, i. 105. Vize, "Fungi Brit.," i68; "Micro. Fungi 

 Brit," 555, 557- Rabh., 1589. 



.•Ecidiospores on Pediciilaris palustris, June and July. 



Uredospores on Carex vulgaris, strictajulva, and panicea (?), 

 July and August ; teleutospores, August to June. 



Biology.— In June, 18S8, I found the fecidiospores at Irstead, 

 Norfolk, in company with the last year's teleutospores. The latter 

 germinated freely, and, when applied to Pedicularis paltistris,g\v& rise 

 to the Eecidiospores. Conversely, the scidiospores, applied to Carex 

 milgaris, give rise to the uredospores and teleutospores. Professor 

 Trail has found this species in Orkney. 



Puccinia obscura. Schrot. 

 ^cidiospores—V?.Q\xdo^en^\^ on large roundish or elongate dis- 

 coloured spots, mostly epiphyllous, shortly cylindrical, with 

 torn white edges. Spores irregularly globose, finely echinu- 

 late, 18-20/A in diameter. 



