yEcidiuui. 2 7 1 



sides. Spermogonia immersed, conical, honey-coloured. 

 Pseudoperidia white, opening irregularly. Spores elliptical 

 or polygonal, coarsely ^•crrucose, 16-30 x r5-i7/u,. 



Synonyms. 



yEddiiim elatinuni. Alb. and Schw., " Consp.," p. 121. 



Peridermiitm elatifium, Alb. and Schw. Cooke. Seem. /our. 

 Bof., vol. ii. p. 34; " Hdbk.," p.. 535 ; " Micro. Fungi," 4th edit., 

 p. 194. 



On Fifius picea. 



JEcidium pseudo-columnare. J. Kiihn. 



Pseudoperidia in two rows on the under side of the affected 

 leaves, which are not altered in length or breadth, but are 

 paler than the healthy ones. Pseudoperidia spherical, ovate, 

 or elongate, '5-2 mm. high, edges irregularly torn. Spores 

 white, finely verrucose, ovate, elongate elliptical, or irregular, 

 often triangular in section, 33-37 X 18-25/x. 



Synonyms. 



J. Kiihn, "Hedwigia," 1884, p. 168. 



Pej-idermiiitn columnare, Alb. and Schw. Cooke, "Hdbk.," 

 p. 535 ; "Micro. Fungi," 4th edit., p. 194, t. ii. figs. 27, 28. 



Exsiccaii. 

 Vize, '' Micro. Fungi Brit.," 60. Cooke, i. 214. 



On AMes pectinata, nordmam'ana, amabilis, cepJialonica. 

 Lyme Regis, Mr. Munro. 



Biology. — jEcidium columnare was found by De Bary to be 

 the yEcidium of Melampsora gocppertiana^ Kiihn ; but the teleuto- 

 spores have not up to the present time been found in England, 

 ahhough their host-plant, Vaccintum I'itis-idcea, is by no means rare. 

 L therefore submitted specimens of this species to Professor Kiihn, 

 who found them to be his Mc. pseudo-columnare ^ the life-history of 

 which is distinct frcm ^c. columnare. 



