380 THE CANADIAN NATURALIST. [DeC. 



Ranunculus sceleratus, L. This plant is frequent in railway and 

 roadside ditches, and in wet places in old pastures and neglected 

 grounds. In range it is common from the Detroit Kiver and the 

 southern shores of the Georgian Bay to the Lower St. Lawerence, 

 and is native in the Hudson Bay Territory. In the two Pro- 

 vinces it probably chiefly occurs in the introduced state. 



Barbarea vulgaris, R. Br., is often met with in gardens. Mr. 

 Barnston (Canad. Nat. 1859) speaks of it as introduced or not 

 according to locality. The varieties are indigenous from Lake 

 Superior northward and westward. The plant is well known in 

 Ontario in its introduced form, but is apparently less fiimiliar in 

 Quebec. 



Erysimum cheirantlwides, h., is a weed in gardens at Belleville 

 (Mr. J. Macoun), but elsewhere I know it only as a native. In the 

 Lake Erie districts and in Eastern Ontario it is frequent, and no 

 doubt occurs in the Eastern Townships. 



jDruha verna, L. This plant is little known here, and is only 

 provisionally placed in this catalogue. Provancher cites Cap 

 Tourmente as a station, and, according to Prof Gray, it is not 

 found north of the Province of Quebec. In the Southern United 

 States and in Massachusetts it is introduced. 



Turrltis glabra, L. Mr. Macoun regards this as introduced 

 around Belleville, where it occurs in newly seeded meadows. In 

 the indigenous form its known range is from Lake Superior to 

 Montreal and southward. In the Hudson's Bay Territory it is 

 well diffused. 



Sisymbrium Sophia, L., is occasionally met with from Pres- 

 cott, in Ontario, eastwards. Whether it occurs in the indigenous 

 state or not is open to doubt. In the Northern States it is still 

 less known. 



Cerastium viscosum, L. Torrey and Gray, in their flora, 

 when referring to this specie?, as well as C. vulgatum, add an 

 interrogation after " introduced." Macoun thinks it occurs in 

 both the native and naturalized states at Belleville. It ranges 

 from the northern shores of Lake Huron to those of the Lower 

 St. Lawrence. Seeman notes its occurrence within the Arctic 

 zone. 



Arenaria serpylUfoUa, L. Prof. Brunei says of this plant, 

 ^^ EUe est certainement spontanee au Labrador ^ I have only 

 seen it in the introduced state, but Macoun, whilst observing its 

 occurre.ice in waste ground, thinks it may be indigenous at 



