146 British UredinecB and Ustilaginece. 



Synonyms. 



Puccinia calthcB. Link., "Sp. Plant," vol. vi. pt. ii. p. 79. 

 Winter in Rabh., " Krypt. Flor.," vol. i. p. 216. Berk., " Eng. 

 Flor,," vol. V. p. 367. Cooke, " Hdbk.," p. 504 ; " Micro. Fungi," 

 4th edit., p. 210. Grev., " Flor. Edin.," p. 367. Johnst., " Flor. 

 Berw.," vol. ii. p. 196. 



Vadium calthce. Grev., "Flor. Edin.," p. 446. Berk., 



" Eng. Flor.," vol. v. p. 371. Cooke, " Hdbk.," p. 539 ; " Micro. 



Fungi," 4th edit, p. 196. 



Exsiccati. 



Cooke, i. 114. Vize, "Micro. Fungi," 159; "Micro. Fungi 



Brit.," 219. 



On Caltha palusiris. 

 May to September. 



Puccinia convolvuli. (Pers.) 

 yEcidiospores—ln circular clusters on the leaves and on elongated 

 swellings on the stems. Pseudoperidia cup-shaped, with 

 broad, recurved, torn white edges. Spores polygonal, finely 

 verrucose, pale yellow, 17-26 X 25-30/x,. 

 Uredospores—^ox\ scattered or circinate, often confluent, bro\TO, 

 soon naked. Spores subglobose, rarely ovate, echinulate, 

 pale brown, 22-26 x 25-30/x. 

 Teleutospores — ?>0T\ scattered or circinate, dark brown, long 

 covered by the epidermis, sometimes confluent. Spores of 

 two kinds: (i) Teleutospores proper, oblong, oval, or sub- 

 clavate, apex truncate, slightly thickened, or attenuated, or 

 much thickened, base rounded or slightly attenuated, deep 

 brown, 38-66 x 20-30/x. Pedicels stout, brownish. (2) 

 Mesospores, generally ovate, apex much thickened, truncate, 

 or attenuated, brown, 25-35 X 20-25/^. Pedicels pale brown, 



persistent. 



Synonyms. 



Puccinia convolvuli (Pers.). Winter in Rabh., " Krypt. Flor.," 



vol. i. p. 204, 



Uredo betcB, var. cofivolvuli. Pers., " Syn.," p. 221. 



On Convolvulus sepium; Miss Jelly. 

 June to October 



