54 The Ottawa Naturalist. [June 



334 Leptogium Tremelloides (L.) Fr. 



On rocks and trunks ; common. On boulders and trees north of 

 the Aylmer Road, west of Hull, Que., April 27th, 1895 ; on trees in 

 Dow's Swamp ; on boulders in Keechwood Cemetery ; in McKay's 

 woods, and on "Pine Hill," Rockcliffe Park; on old logs and rocks 

 King's Mountain, May 22nd, 1897. 



335 Leptogium chloromelum, (S^v.) Nyl. 



On old rails near Aylmer and on damp rocks near the summit of 

 Kin-^'s Mountain, west oJ Chelsea, May 22nd 1897. 



336. Leptogium respulinum. .'\ch. 



On hmestone recks near the Oitawa below Governor's Bay, Rock- 

 cliffe Park, April i6lh, 1891. 



XVHI. PLACODIUM (DC.) 



337. Placodium elegans, (Link.) DC. 



On a large boulder in woods, Governor's Bay, Rockcliffe Park, 

 April i6th, 1895. 



338. Placodium aurantiacum, (Lightf ) 



On trees and rocks ; also on dead wood. On a granite boulder 

 in woods, Governor's Bay, Rockcliffe Park, .A.pril 17th, 1895 ; on lime- 

 stone rocks at Britannia ; on boulders in woods west of Hull and on 

 boulders at Leamy's Lake, Oct. 9th, 1896. 



339 Placodium ccrinum, (Hedw.) 



Common on trees, on dead wood and mosses. On maple and 

 poplar bark Stewart's bush near ihe C. A. R. track, April 12th, 1895 5 

 on dead trees and living ash bark at Britannia ; on poplar bark south 

 of the Aylmer Electric Road, west of Hull, Que. ; on black ash Ottawa 

 East ; on trunks in woods at Leamy's Lake ; on poplar trees in a 

 swamp at Stittsville ; on old rails and trunks King's Mountain, May 

 22nd, 1897. 



340. Placodium vitellinum, (Ehrh.) 



On dead wood and rocks. On old pine rails at Britannia, April 

 20th, 1895; o" cedar rails Ottawa East; on boulders in pasture by 

 Brigham's Creek- on old rails and logs, King's Mountain, May 22nd, 

 1897. 



341- Placodium vitellinum, (Ehrh.) var. aurellum, Ach. 



On granite boulders in woods. Governor's Bay, RockclifTe Park, 

 April 17th, 1895 ; on boulders in woods north of the Aylmer road 

 west of Hull, Que.; on boulders Ottawa East; on boulders in pastures 

 by Brigham's Creek, May 7th, 1897. 



