224 GEOLOGICAL SURVEY OF CANADA. 



(Dawson.) Saskatchewan to Fort FrankliQ on the Mackenzie Eiver. 

 (Blchardson.) Within the Eocky Mountains, Lat. 54°. (JDrummond.') 

 Poiat Barrow to Mackenzie Eiver along the northern coast. (Bothr. 

 Alash.) At Spence's Bridge, B.C. (Fletcher.) Ghilcoten Eiver, west 

 of the Eraser Eiver, B.C. (Dawson.) 



(1039.) A. campestris, Nutt. 



The specimen referred here is only viscid-pubescent on the upper 

 part of the stem and especially on the involucral scales and pedicels. 

 Ghilcoten Eiver, west of the Eraser Eiver, B.C. (Dawson.) 



(1040.) A. dumosus, Linn. 



A very obscure species in Canada. Should be looked for in the south- 

 western part of Ontario. Vicinity of Hamilton, Ont. (Logie.) South- 

 western Ontario. (Maclagan.) 



(1041.) A. paniculatus, Lam. 



A- drnplcv, Torr. & Gray FI. II., 131. Macoun's Cat., No. 852. 



A. tenuifoKus, Torr. & Gray Fl. II., 132, in part. Macoun's Gat., No. 870. 



A. parviflorus, Hook. Fl. II., 11. 



A. Lamarckianus, Hook. Fl. II., 11. Macoun's Cat., No. 853. 



This species, as I understand it, includes all the forms which we in 

 Canada have been naming A. simplex and A. tenuifolius, but besides the 

 eastern forms. Dr. Gray has referred large-flowered western specimens 

 to the same multiform species, and in the absence of his revision of 

 this most difficult genus I make no attempt to separate the various 

 forms. Borders of brooks and along rivers and in low meadows from 

 Nova Scotia to the Eocky Mountains, and possibly west to the Coast 

 Eange in British Columbia. We have possibly two species here. 



(1042.) A. diffusus, Hook. PI. IL, 19. 



A. miser, Torr. & Gray Fl. II., 129. Macoun's Cat-, No. 843. 



A. penduLus, Hook. Fl. II., 12. 



A. d'kergnis, Hook. Fl. II., 11. 

 This is another multiform species, and although numerous varieties 

 might be enumerated, we consider it better to leave them together 

 until sufficient material has been collected to enable some one to speak 

 definitely regarding the various forms. Old fields and borders of woods, 

 along ditches and in low damp woods, extending from Nova Scotia 

 and New Brunswick to the western part of Ontario. 



(1043.) A. salicifolius, Ait. 



A. cameiis, Nees. Torr. & Gray Fl. II., 133. Macoun's Cat, No. 873. 

 A. laxifoUm, Hook. Fl. II., 10, in part. 

 This is another species which may include two distinct forms or 



