PHRAGMIDIUM 



295 



Uredospores. Son small, punctiform, yellow; paraphyses 

 like those of the last species; spores roundish, 

 echinulate, yellow, 18 — 21 /n. 



Teleutospores. Sori similar, with similar 

 paraphyses, in little clusters, black ; spores 

 cylindrical or fusiform, of 8 — 13 cells, atten- 

 uated upwards into a pale horny conical 

 process, not constricted, rounded below, 

 verrucose, dark-brown, 80 — 105 x 21 — 24 fi ; 

 each cell with two or three germ-pores; 

 pedicels colourless, persistent, sometimes 

 longer than the spore. 



On Rosa alpina. Rare ; Scotland (intro- 

 duced). June— October. (Fig. 223.) 



This species is very abundant on R. alpina in 

 Switzerland. It is distinguished by its numerous, 

 very short, and crowded cells, which are separated 

 by thin partitions. 



Distribution : Europe. 



6. Phragmidium violaceum Wint. 



Puccini'a violacea Schultz, Flor. Starg. p. 459. 



Lecythea ruborum Lev. ; Cooke, Micr. Fung. 



991 Fig. 223. Ph. fusi- 



p. z.l p.p. forme. Teleutospore. 



Phragmidium violaceum Wint. Pilze, p. 231. 



Plowr. Ured. p. 223. Fischer, Ured. 



Schweiz, p. 416, f. 289. Sacc. Syll. vii. 744. Sydow, Monogr. 



iii. 139. 

 P. bulbosum Schlecht. ; Cooke, Handb. p. 491 ; Micr. Fung. p. 201, 



f. 41, 45, 46. 



Spermogones. Epiphyllous, in crowded clusters. 



^Ecidios pores. Cseomata hypophyllous, roundish or elon- 

 gated, often in circular clusters, on conspicuous spots which are 

 reddish above and surrounded by a violet-red margin, frequently 

 also on the stems ; paraphyses few, clavate, straight ; spores 

 roundish or ellipsoid, echinulate, orange -yellow, 19 — 30 x 17 — 

 24 ix. 



