Micropiiccinia. 207 



Biology. — This plant appears to me to have a perennial mycehum, 

 but I liave not had the opportunity of cultivating it. 



Puccinia fergussoni. B. and Br. 



Teleutospores—Sori on rounded yellowish or paler spots, crowded 

 in orbicular clusters, long covered by the epidermis. Spores 

 oblong, slightly constricted, apex often obtusely and conically 

 apiculate, smooth, yellow-brown, 23-38 X 13-20/x,. Pedicels 

 short,, deciduous. 



Synonym. 



Puccinia fergussoni^. B. and Br. Cooke, " Micro. Fungi," 

 4th edit., p. 210. Winter in Rabh., " Krypt. Flor.," vol. i. p. 176. 



On Viola palustris. 

 Scotland and AVales. 



Puccinia rhodiolae. B. and Br. 



Teieutospores — Spots orbicular, brown. Sori minute, crowded. 

 Spores shortly pedicellate, articulations depressed, sometimes 

 spuriously subdivided. 



Synonym. 



Puccinia rhodiolce, Berk. Gardiner's " Flora of Forfar.," p. 296. 

 B. and Br., Ann. Nat. Hist., No. 468. Cooke, " Hdbk.," p. 506 ; 

 "Micro. Fungi," 4th edit., p. 211. 



On Sedum i-Jwdiola. 

 Summer. 



Puccinia adoxae, 1). C. 



Teieutospores — Sori black, small, rounded, circinate on the leaves, 

 scattered on the swollen stems, confluent, pulverulent. Spores 

 oblong, elliptical, or ovate, extremities attenuated, central 

 constriction very slight or absent, apiculate above, smooth, 

 brown, 25-35 ^ 15-20/x,. Pedicels hyaline, as long as, or 

 longer than, the spores,, deciduous. 



