Acidium. a7 
sides. Spermogonia immersed, conical, honey-coloured. 
Pseudoperidia white, opening irregularly. Spores elliptical 
or polygonal, coarsely verrucose, 16-30 X 15-17). 
Synonyms. 
cidium elatinum. Alb, and. Schw., “Consp.,” p. 121. 
Peridermium elatinum, Alb. and Schw. Cooke. Seem. Jour. 
Bot., vol. ii. p. 34; “ Hdbk.,” p.. 535 ;. ‘‘ Micro. Fungi,” 4th edit., 
P. 194. 
On Pinus picea. 
A&cidium, 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  18-25p. 
Synonyms. 
J.. Kithn, “ Hedwigia,” 1884, p. 168. 
Peridermium columnare, Alb. and Schw. Cooke, “ Hdbk.,” 
p. 535; “Micro, Fungi,” 4th edit., p. 194, t: ii. figs. 27, 28. 
Eexstecat?, 
Vize, ‘‘ Micro. Fungi Brit.” 60. Cooke, i. 214. 
On Abies pectinata, nordmantana, amabilis, cephalonica. 
Lyme Regis, Mr. Munro: 
BIoLoGy.—4cidium columnare was found by De Bary to be 
the AEcidium. of Melanipsora goehpertiana, Kiihn ;. but the teleuto- 
spores have not up. to the present time been found in England, 
although their host-plant, Vaccinium. vitis-idea, is by no means rare. 
I therefore submitted specimiens of this species to Professor Kiihn, 
who found them to be his 4. pseudo-columnare, the life-history of 
which is distinct from. 4c, columnare. 
