THE OTTAWA NATURALIST. 



Vol. XII. OTTAWA, AUGUST, 1898. No. 5, 



THE CRYPTOGAMIC FLORA OF OTTAWA. 



By Prof. John Macoun, M.A., F.L.S., F.R.S.C. 

 Continued from the June Number. 



360. Pertusaria communis, DC. 



On bark ot old trees. On maple trees in Stewart's Bush near the 

 C.A.R. track, April 12th, 1898; on beech trees in woods one mile 

 south-east of Billings' Bridge ; on old fence rails along the Richmond 

 Road west of Hinlonburgh ; on trees in woods west of Hull ; on trees 

 in woods at Leamy's Lake ; on trees and old logs, Aylmer and Ring's 

 Mountain. 



361. Pertusaria velata, (Turn.) 



On an ash tree in a swamp, Britannia, April 20th, 1895 ; on beech 

 trunks, "Pine Hill," Rcckcliffe Park ; on o'd rails near Aylmer and at 

 the base of Ring's Mountain ; on butternut trees along the Aylmer 

 Road west of Hull. 



362. Pertusaria leioplaca (Ach.) 



On beech trees in woods at Buckingham, Que., May 14th, 1896. 



363. Pertusaria Wulfenii, DC. 



On beech trees in woods, Rockcliffe Park, April 21st, 1891 ; on 

 the base ol beech trees in words one mile south-east of Billings' Bridge ; 

 on beech trees in woods west of Hull Station ; also on beech trunks 

 near Leamy's Lake. 



XXn. CONOTREMA, Tuckerm. 



364. Conotrema urceolatum, (Ach.) Tuckerm. 



On bark of bi'ter nut hickory in woods north o( the Aylmer Road 

 and west of Hull, Oct. 4th, 1884. 



XXIH. GYALECTEA, (Ach.) 



365. Gyalectea lutea, (Dicks.) Tuckerm. 



On the bark of hemlock trees in woods iiorlh f)f Beechwood 

 (Cemetery, April 27th, 1892. 



XXIV. THELOPREMA, (Ach.) 



366. Thelotrema lepadinum, Ach. 



On black ash trees in a swamp west of the enUajice to Beechwocd 

 Cemetery, Oct. i6th, 1884. 





