ISO IMVi'lMA 



Uredospores. Sori hypophyllous, minute, scattered or 



circinate, roundish, sood aaked, brown; spores subglobose to 



ovoid, echinulate, pallid-brown, 



20 — 23 x 16 — 19 fi, with three 



germ -pores. 



Teleutospores. Sori similar. 



but long covered by the grey 



epidermis, often confluent, or 



standing in circles round the 

 Fig. 129. P. Primulae. . ° . . 



Teleutospores and mesospore. secidia or uredo-SOri, blackish- 



brown; spores ovoid or oblong, 



rounded at both ends, hardly thickened above but with a 



broad colourless papilla on each germ-pore, gently constricted, 



smooth, pallid-brown, 22 — 30 x 15 — 18 /x ; pedicels hyaline, 



short, deciduous ; an occasional mesospore was seen. 



On Primula acaulis {vulgaris). Xot common. zEcidia in 

 May; teleutospores, June — October. (Fig. 129.) 



All three spore-forms may be found on the same leaf. The teleuto- 

 spores are rather irregular in shape ; mesospores are not infrequent, and 

 Fischer describes and figures three-celled spores. This parasite is recorded 

 on the continent also on Primula elatior and P. verts. 



Distribution : Central Europe. 



52. Puccinia Soldanellae Fckl. 



.■Ecidlum Soldanellae Hornsch. in Rab. Krypt. Fl. p. 18 (1844 . 



Cooke, Handb. p. 537 ; Micr. Fung. p. 195. 

 Credo Soldanellae DC. Flor. fr. vi. 85 (1815). 

 Puccinia Soldanellae Fckl. Symb. Myc. Nacht. iii. 14. Plowr. Ured. 



p. 159. Sacc. Syll. vii. 618. Sydow, Monogr. i. 349. Fischer, 



Ured. Schweiz, p. 159, f. 123. 



Spermogones. Hypophyllous, numerous, punctiform, spheri- 

 cal. 



JScidiospores. zEcidia hypophyllous, scattered uniformly 

 over nearly the whole leaf-surface, shortly cylindrical or urceo- 

 late, with a white denticulate revolute margin ; spores delicately 

 verruculo.se, yellowish. 18 — 26 fi. 



[Uredospores. Sori generally epiphyllous, without spots, 



