OCHROPSORA 329 



iEcidia on leaves of Pinus silvestris; uredo- and teleutospores 

 on Campanula glomerata, C. latifolia, C. rotundifolia, C. Tra- 

 chelium, C. turbinata, end of July — October, not uncommon ; 

 sometimes abundant on cultivated species of Campanula, in 

 both uredu- and teleuto-stages. (Figs. 246, 247.) 



Some of the forms on the various species are separated by Klebahn as 

 biologically distinct, but the specialisation is not in any case sharply fixed 

 (Wirtswechs. Rostp. pp. 365 — 9). C. Campanxdae is also recorded, in 

 other countries, on many other species of Campanula and on Phyteuma 

 and Specularia. In North America the secidia are found on Pinus rigida 

 but, as in this country, are much less common, or at least less frequently 

 observed, than the spore-forms on Campanulaceae. On C. rotundifolia, 

 this species and Puccinia Campanulae may be found in company. 



Distribution : Europe, North America, China, Japan, East 

 Indies. 



OCHROPSORA Dietel. 



yEcidia with cup-shaped peridium. Uredospores solitary, 

 on pedicels. Teleutospores united loosely into waxy crusts, 

 club-shaped or cylindrical, not thickened above, dividing as 

 they mature into four superimposed cells. 



This genus is not closely allied to Goleosporium. Tt is, 

 indeed, doubtful whether the character upon which the Coleo- 

 sporiacese are united into one group, viz. the internal basidium, 

 is really an indication of close affinity. There can be little 

 doubt that Chrysopsora, which also has an internal basidium, 

 belongs to the Pucciniacese, and not to the Coleosporiaceae. 



Ochropsora Sorbi Diet. 



jEcidium leucospermum DC. Flor. fr. ii. 239. Cooke, Handb. p. 536; 



Micr. Fung. p. 194, pi. 1, f. 4—6. Plowr. Ured. p. 269. 

 Ochropsora Sorbi Dietel, Ber. Deutsch. Bot. Gesell. 1895, xiii. 401. 



Fischer, Ured. Schweiz, p. 455. 



Spermogones. On the foliage leaves (loosely spread over 

 the whole upper surface) and even on the sepals, whitish, then 

 brownish. 



