T92 British Uredinea: and UstiIao;inecr 



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Teleutospores — Sori small, blackish, crowded in linear series, long 

 covered by the epidermis. Spores irregularly elliptical or 

 cuneiform, constriction slight or absent, summits generally 

 truncate, often obliquely, rarely rounded, usually thickened, 

 attenuated below, smooth, brown, 25-35 ^ i5~25)U,. Pedicels 

 very short, often obsolete. 



Synonyms. 



Puccinia baryi (B. and Br.). Winter in Rabh., " Krypt. Flor.," 

 vol. i. p. 178. 



Epitea baryi. B. and Br., Ann. Nat. Hist., No. 755. 



Lecythea baryi., Berk. Cooke, "Micro. Fungi," 4th edit., 

 p. 222 ; "Hdbk.," p. 532. Berk., "Outl.," p. 334. 



On Brachypodium sylvaticum and pin nat tint. 

 June to November. 



Biology. — This is probably a heteroecious species. Mr. Soppitt 

 considers that it also occurs on Aim cccspitosa. 



Puccinia bistortse. D. C. 



Uredospores — Sori yellow, small, irregularly rounded, soon naked, 

 scattered. Spores rounded or elliptical, finely echinulate, 

 yellow, 20-28 X 18-20/X. 



Teleutospores — Sori black-brown, very small, often confluent. 

 Spores elliptical or ovate, very slightly constricted, apex not 

 thickened, rounded, smooth, brown, 24-38 X 15-24/x. Pedicels 

 rather long, deciduous. 



Synonym. 



Puccinia bistorta>, D. C. Winter in Rabh., " Krypt. Flor.," 

 vol. i. p. 186. Cooke, "Micro. Fungi," 4th edit., p. 204. 



On Polygonum viviparum. 

 July to September. 



Puccinia pruni. Pers. 



Uredospores — Sori light brown, small, round, crowded, pulverulent, 

 often confluent. Spores ovate or subpyriform, apex darker, 



