A 2itcupuccin ia . 149 



irregular clefts without typical pseudoperidium. Spores 

 rounded, pale orange, densely verrucose, 15-25 x 12-20/x. 



Uredospo7-es — Sori reddish brown, scattered or circinate, small, 

 rounded. Spores spherical, pale yellow, finely echinulate, 

 with very remarkably thickened margins to the three germ- 

 pores, as seen in the moist state, 16-23/Ain diameter. 



Teleutospoi'es — Sori round, blackish, dusty. Spores elliptical or 

 ovate, central constriction slight, extremities rounded, apex 

 scarcely thickened, finely punctate, brown, 25-35 ^ 20-25/x. 

 Pedicels deciduous, colourless, short. 



Sy?WJiyfns. 



Piiccinia prenanthis (Pers.) Winter in Rabh., " Krypt. Flor.," 

 vol. i. p. 208. Schrot., " Krypt. Flor. Schl.," vol. iii. p. 318. 



yEcidium prenanthis. Pers., " Symb.," p. 208. Cooke, 

 " Hdbk.," p. 542; "Micro. Fungi," 4th edit, p. 19S. Grev., 

 Flor. Edin.," p. 444. Johnst., " Flor. Berw.," vol. ii. p. 205. 



yEcidinm coniposiiaruni, Mart, in part. Berk., " Eng. Flor,," 

 vol. v. p. 370. 



Piiccinia chondrillcB., Corda. Vize, Exs. 



Exsiccati. 

 Vize, "Micro. Fungi Brit," 211. 



On Lactiica muralis. 

 April to September. 

 Some of the teleutospores are as much as 40/x in length. 



Puccinia lapsanae. (Schultz.) 



yEcidiospores — Pseudoperidia flat, amphigenous, with torn, white 

 reflexed edges, on purple, irregular spots. Spores ovate or 

 subrotund, smooth, yellow, about i8/a in diameter. 



Uredospores — Sori orbicular, pulverulent, very numerous, often 

 confluent, cinnamon-brown. Spores subglobose or ovate, 

 brown, finely echinulate, 18-21 x \^-\i[*.. 



Teleutospores — Sori small, flattish, black, pulverulent, numerous. 

 Spores ovate or roundish, obtuse at both extremities, slightly 

 (if at all) constricted, punctate, dark brown, 23-28 x iS-2ia 

 Pedicels hyaline, short, often oblique. 



