2 26 Bi^itish UredinccE and Ustilaginccu. 



Phragmidium rosae-alpinae. (D. C.) 



^cidiospores — Sori of two kinds, on the leaves, small and puncti- 

 form ; on the stems, large and erumpent. Spores polygonal 

 or ovate, echinulate, orange-yellow, 17-28 x 15-20/^. Para- 

 physes globose, colourless. 



Vredospores — Sori small, round, pale yellow. Spores rounded or 

 oval, echinulate, yellow, 15-20/* in diameter. 



Teleufospores — Sori very small, black. Spores rounded or oval, 

 cell ten to thirteen, thickly verrucose, cylindrical, fusiform, 

 attenuated at both ends, apex with a conical colourless papilla, 

 dark brown, 11 5-1 20 X 18-25/x. Pedicels as long as the 

 spores. 



Synonyms. 



Winter, loc. cit., p. 227. 



Uredo pifiguis, (S Rosa alpincs. D. C, " Flore frang.," vol. ii. 



P- 235- 



Phragmidijnu fusiforme. Schrot., " Brand, und Rostp.," p. 24. 



On Rosa alpina. Scotland. 

 July to October. 



Phragmidium rubi-idaei. (Pers.) 



.Ecidiospores — Sori small, epiphyllous, greenish yellow, often cir- 

 cular, abundant, umbilicate. Spores in short chains, round or 

 oval, echinulate, orange-yellow, 20-30/* in diameter. Para- 

 physes globose, orange-yellow. 



Vredospores— '$>QX\ small, scattered, pale orange. Spores globose 

 or ovate, echinulate, yellow, 16-22/x in diameter. 



Teleutospores — Sori roundish, small, loose, scattered, black. Spores 

 opaque, cylindrical, dark brown, apex with a blunt, conical 

 hyaline papilla, cells eight to ten, 1 10-130 X 20-30/x. Pedi- 

 cels long (i2o-i35ft), bulbous. 



Syno7iyms. 

 Winter, loc. cit., p. 231. 



Uredo rubi-idcei. Pers., " Obs. Myc," vol. ii. p. 24. 

 Uredo gyrosa, Reb. Berk., " Eng. Flor.," vol. v. p. 384. Grev., 

 " Flor. Edin.," p. 439. 



