30 The Ottawa Naturalist. [May 



VI. THELOSCHISTES, Norm. 



285 Tneloschistes polycarpus, (Ehrh.) 



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

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

 April i2tli, 1895 ; common on willow, red ash and alder at Britannia ; 

 on t),ilsaui pijplar and white ash trunks, at Hintonburjj ; and on ash 

 and r^^ck elm m Beech wood ; on old fence boards at Billing's Bridge ; 

 on red maple and as>h at Leamy's Lake ; rare on trees at Stittsville ; on 

 trunks, King's Mountain, west of Chelsea, May 22nd, 1.897. 



286. Tiieloschistes concolor, Dicks. 



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

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

 ash, maj^le and alder at Britannia ; common on bark of trees, Aylmer 

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

 burg ; also on basswood trees at Carleton Place ; on a black ash log, 

 Ottawi Eist, and on ash trees in Beechwood : on old fence boards at 

 B;llini;'s Bridge ; op. various trees in woods, Eeamy's Lake ; on trees at 

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

 1897. 



Vn. PARMEIJA, (Ach.) De Not. 



287. Parmelia perlata, (I.) 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 12th, 1895 ; «" a spruce trunk in Rockcliffe Park ; on birch 

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

 cherry birch in ihe swamp near Beech wood 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 

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

 at Stittsville, May 14th, 1897. - . -- . t" 



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