i6o The Ottawa Naturalist. [October 



Viola Macounii, Greene, Pittonia, vol. iii, p. 335 and Ott. Nat. 

 vol. xii, p. 184. 



On dry limestone shing-le, growing among grass in the shade 

 of cedars, between Rockliffe Road and Governor's Bay, Ottawa, 

 Ont. Type locality. Herb. No. 18,746. (/. M. Macoun.) The 

 specimens collected by Prof. Macoun, near Hull, and referred to 

 this species in Ottawa Naturalist, represent a new species not yet 

 described. 



Viola venustula, Greene, Pittonia, vol. rii, p. 335, and Ott. Nat. 

 vol. XII, p. 184. 



In the wet meadows between the Rockliffe Road and Gover- 

 nor's Bay, Ottawa, Ont. Type locality. Herb. No. 18,565. (/. 

 M. Macoun.) 



Viola cucullata. Ait. 



A common violet throughout Eastern Canada. The only 

 species of this group of general distribution. 



Viola Dicksonii, Greene, Pittonia, vol iv, p. 65. 



V. cusptdata, Ottawa Naturalist, vol. xii, p. 185. 



Allied to V. cuspidaia, but the herbage light-green, the pu- 

 bescence more sparse and hispidulous, the petaliferous flowers on 

 nearly terete peduncles about equalling the leaves and bibracteol- 

 ate near the base ; sepals lanceolate, either naked or ciliolate : 

 corolla about ^ inch long, of a fine lavender-blue, the paired pet- 

 als, especially the two uppermost, obovate-rhomboidal, the laterals 

 white at base and strongly bearded with indistinctly clavellate 

 hairs, the keel-petal shorter and narrower than the others, more or 

 less conduplicate or convolute especially at the apex, white at base 

 and purple-veined above the white ; summer foliage less broad in 

 proportion to its length than in V. ciispidata and more apt to be 

 cucullate : apetalous floweis on short but nearly or altogether 

 hypogeous peduncles. 



A very common violet in the vicinity of Ottawa and probably 

 abundant throughout Ontario, Mr. J. M. Dickson having collected 

 it at Hamilton and Mr. Wm. Scott at Niagara-on-the-Lake, Queens- 

 ton, Cartwright and Toronto. Dr. Greene in Pittonia, vol. iv, p. 



