i goo] The Cryptoi;amic Flora of Ottawa. 185 



489. BlATORA MICROCOCCA, Koerb. 



On old cedar rails {Thuya occidentalis) west of the old 

 toll-gate, Aylmer Road, Hull, Que , Oct. 6, 1898. 



490. Biatora mel.ena (Nyl.) Tockerm. 



On old and charred cedar rails along- the Richmond 

 Road, west of Ottawa, April 18, 1896. 



491. Biatora Beckhausii, (Koerb.) 



On old fence rails west of the old toll-gate on the Aylmer 

 Road, west of Hull, Que., Oct. 6. i8q8. 



492. Lecidea pruinosa (Smith) Flot. 



Quite common on granite boulders in many places 

 around Ottawa, April, 1897. 



493. Lecidea lapicida (Ach) Nyl. 



On limestone shingle near Hogsback by the Rideau River, 

 May 7, 1897 ; quite common on limestone rocks everywhere 

 around Ottawa. 



494. Lecidea contigua, Fr. 



On limestone rocks, Blueberry Point, Aylmer, Que., 

 April 25, 1900. 



495. Lecidea enteroleuca, Fr. 



On small limestone pebbles at Britannia, April 25, 1S95 ; 

 also on pebbles, Blueberry Point, Aylmer, Que. April 25, 

 1900. 



496. Lecidea enteroleuca, Fr. var. pilularis, DC. 



On limestone rocks along the Rideau River below Hogs- 

 back, May 2, 1897 ; on limestone shingle, Blueberry Point, 

 Aylmer, Que. April 25, 1900. 



497. Lecidea planetica var. perfecta, Kckfeldt. 



On limestone shingle at Britannia, April 20, 1895. 



498. Buellia spuria, (Schaer.) Arn. 



On limestone rocks in woods near Hull, Que. April 24, 



1897. v^^'^iV 



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