•2-\ OEOLoaic.vr, survkv ok canapa. 



(^Ddirson.) Sa'-l\;ii<lK'\v;iii li> l''oil l-'raiilvliii on (ho MaoUoii/.ic IJiver. 

 ( Rirhijrdson.) Williiii I In- Rocky Moiinlains, Lat. 5 ^°. (Dniinniond.) 

 IVtiiil l>aii"\v \>> MacUoiizio liivor aloni;; Ihc imilliciii coasl. (^Rothr. 

 Aliisk.) At S|KMic«''s I>riili:;o, H.C (Fletcher.) Cliilroicii River, west 

 ot" the Fraser Iviver, B.C. (Dairson.) 



(10:!'.».) A. campestris, Nutt. 



The speeimen relenni iicro is only vis('iil-|)ul)08<'enl on llir ii|)|»('r 

 part ot' tlio >(('Mi ;mp1 espeeially on llic involmral scales ami peilicels. 

 (MiiKoton K'ivtM-, wi'sl of (lie Kraser River, \i.C {JJtuvaon.) 



(1040.) A. dumoSUS, liinn. 



A vor}' obseiire species in Canada. Sliiuilij Ik> lonkril lor in (iiesoiitli- 

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

 western Ontario. {Madagan.) 



(1041.) A. paniculatus, Lam. 



A- /^implex, Torr. & Gray Fl. II., 131. l\[a<;oun's Cat., NTo. 852. 



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



^1. )wr>iliori(J>, Hook. Fl. II., 11. 



A. L<imnrcklitnu<i, 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 namini^ A. simplex and A. tenuifolius, but besides the 

 eastern forms, J^i-. (rray has referred large-flowered western specimens 

 to the same muKiform species, and in tlu; al)seuce of his revision of 

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

 forms. Boi'ders of lirooks and along rivers and in low meadows from 

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

 Range in British Columbia. AYe have possibly two species here. 



(1042.) A. diffusus, Hook. Fl. II., 19. 



A. mixer, Torr. ct Gray Fl. II., 129. Macoun's Cat-, No. 843. 

 A. pendiilus, Hook. Fl. II., 12. 

 A. dircrgens, 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 

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

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

 and Xew Brunswick to the western part of Ontario. 



'I'll. 

 (1043.) A. salicifolius, Ait 



A. carneiis, Nces. Torr. & Gray Fl. II., 133. Macoun's Cat., No. 873. 

 A. laxifoliu.f, Hook. Fl. II., 10, in part. 



This is another species which may include two distinct forms or 



