298 



l-iii; \i;mii»mm 



Phragmidium Rubi-Idaei Karst. 



Pucciaiu lliihi-filai'i I )( '. Flor. fr. vi. ">4. 



Lecythea gyrosa Berk. ; Cooke, Micr. Fung. p. 222, pi. 8, f. 162 — 4. 



rhniiiiiu'iliiim gracile Cooke, Handli. p. 4!H ; Micr. Fung. ]>. 201, pi. 3, 



f. 42, 43 ; Grevillea, iii. 171, pL 45, f. 9. 

 /'. Rubi-Idaei Karst. Myc. Fenn. iv. f>2. I'lowr. Ured. p. 226. Fischer, 



Ored. Schweiz, p. 420, f. 291. Sacc. Syll. vii. 748. Sydow, 



Monogr. iii. 146. 



Spermogones. Epiphyllous, in little groups, yellowish. 



Fig. 226. Ph. Rubi-Idaei. a, part of leaf of Raspberry, showing the circular 

 groups of caeomata, nat. size; b, a single group, magnified, showing the 

 spermogones in the centre, surrounded by a pulvinate ring of caaomata, 

 still partly covered by the epidermis ; c, ascidiospore and rf, paraphysis, 

 x 600 ; e, teleutospore x 300 ; /, teleutospore after boiling in lactic acid ; 

 g, single cell of same, showing the three coats, (1) hyaline and gelatinous, 

 (2) dark and rigid, (3) the thin endospore ; /(, one of the middle coats, 

 detached by pressure, showing the three bordered germ-pores. 



sEcidiospores. Ca?omata epiphyllous, small, round, yellow, 

 usually forming a circle round a group of spermogones, sur- 

 rounded by a dense border of hyaline, clavate, inward-curved, 



