42 The Ottawa Naturalist. [May 



VI. THELOSCHISTES, Norm. 



2^85. Tfieloscfifstes polycarpus, (Efirh.) 



A common species on living trees and dead wood. On black ash 

 and white cedar trunks and balsam poplar branches in Stewart's Bush, 

 April i2th, 1895 ; common on willow, red ash and alder at Britannia ; 

 op balsam poplar and white ash trunks, at Hintonburg ; and on ash 

 and rock elm in Beechwood ; on old fence boards at Billing's Bridge ; 

 on red maple and ash at Leamy's Lake ; rare on trees at Stittsville ; on 

 trunks. King's Mountain, west of Chelsea, May 22nd, 1897. 



286. Theloschistes concolor, Dicks. 



On ash trees west of West End Park, April i6th, 1892 ; on white 

 cedar bark by the C.A.R. in Stewart's Bush ; quite common on willow, 

 ash, maple and alder at Britannia ; common on bark of trees, Aylmer 

 Road, west of Hull ; on trunks of black ash in woods west of Hinton- 

 b.urg ; also on basswood trees at Carleton Place ; on a black ash log, 

 Ottawa East, and on ash trees in Beechwood : on old fence boards at 

 Billing's Bridge ; on various trees in woods, Leamy's Lake ; on trees at 

 Stittsville ; on trunks,' King's Mountain, west of Chelsea, May 22nd. 

 1897 . 



VIL PARMELIA, (Ach ) De Not. 



287. Parmelia perlata, (L.) Ach. 



Not uncommon on trunks in wet woods or swamps. A fine species 

 but seldom found in fruit. On ash trees by the C A.R., Stewart's 

 Bush, April 1 2th, 1895 ; on a spruce trunk in Rockcliffe Park ; on birch 

 trees, Skead's Far 11, Richmond Road ; on white cedar, black ash, and 

 cherry birch in the swamp near Beechwood Cemetery ; on a birch tree 

 in Dow's Swamp ; on trees in woods at Chelsea, Que. ; also on trees at 

 Carleton Place ; on trees in the swamp west of Hull Station, Oct. 9th, 

 1896. 



288. Parmelia tiliacea, (Hoffm.) Floerk. 



Rather uncommon except in deep, cool woods. On birch trees 

 on Skead's Farm, Richmond Road ; on beech and other trees, Rock- 

 cliffe Park ; on young spruce trees in woods, Beaver Meadow west of 

 Hull; on a beech tree in woods one mile south-east of Billing's Bridge; 

 on red maple at Leamy's Lake ; on beech trunks, King's Mountain, 

 west of Chelsea, May 22nd, 1897. 



289. Parmelia Borreri, (Turn.) 



Apparently rare in the vicinity of Ottawa. On trunks in woods 

 norih of Beechwood Cemetery, April 23rd, 1891 ; on trees in a swamp 

 at Stittsville, May 14th, 1897. 



