POLYPETALOUS EXOGENS. 



I. EANUNCULACE^. CROWFOOT FAMILY. 



I. CLEMATIS, Linn. (VIRGIN'S BOWER.) 



(1.) C. verticillaris, DC. Whorl-leaved Clematis. 

 Atragene Americana, Sims. Pursh, 384. 



Trailing over rocks or climbing over bushes, from the vicinity of 

 Quebec (Brunet) throughout Ontario, and extending through the wooded 

 district to the Eocky Mountains in Lat. 56 (on Mount Selwyn), and 

 westward to the Coast Eange of British Columbia ; also on the foot-hills 

 of the Eocky Mountains near the 49th parallel, and in the Bow River 

 Pass. 



(2.) G. Virginiana, Linn. Virginian Clematis. 

 C. cordata, Pursh, 384. 



River banks and in low grounds along streams. Common in Nova 

 Scotia, New Brunswick, Quebec and Ontario, and extending to Thunder 

 Bay, Lake Superior. (Macoun.) At the south end of Lake Winnipeg. 

 (Drummond.') 



(3.) C. ligusticifolia, Nutt. 



C. Virginiana, Hook. Fl. I. ; 1 in part. 



Climbing or trailing over bushes or sand on the sand hills at the 

 source of the Qu'Appelle. (Afacown.) Margin of Waterton Lake, 

 Eocky Mountains. (Dawson.') Spence's Bridge and Cache Creek, B. C. 

 (Macoun.) 



(4.) Douglas! i, Hook. Douglas's Clematis. 



On the west side of the Eocky Mountains, near the sources of the 

 Columbia. (Douglas.) It may be looked for in the southern part of 

 British Columbia. 



