lit; nEOT.nnicAi, suuvky oi' cANVitA. 



(527.) O. campestris, I>r. Hook. Kl. 1,147. 



O. hnrinlin, PC Hook. VI. I., 145. 



Islaiuls ill St. .lolin River, N.B. (Jiailei/.) Edmumltoii ami along 

 the l)anks of the Upper St. .lohn, N.B. {IIni/.) Cliffs near Capo St. 

 liouis, (raspd eoa«t. {Mucoun.) hsle of Orleans, ami i-oastof Labrador. 

 (finnu't.) From Carlton to the Rocky Mountains, and as far as the 

 stmreos of the Colunihia (^Dowjlds.) JJoar Lake to the Arctic shores 

 and islands. { liiihitr<(S(»i.) At Spcnce's JJritlge, B.C. Throughout the 

 prairie region, ver}' common. {Mai'oim.) Kolzebue Sound. (^lioihr. 

 Al(i,^k.) Baftin's Bay. {Hooker.) 



Vai'. viscida, Watson. 



0. nsridu, Nutt. Torr. it Gray, Yl I., 341. 

 O. rnui))tKtri.'i. f PI. Bourjicau, 250. 



Saskatchewan Tlains. {Bourgenu.) Bow liivcr at the Blackfoot 

 Crossing and at Morley, N.W.T. {Macoun.) 



(528.) O. Lamberti, Pursh, 740. 



O. Houkrrinna, Nutt. Torr. i*t Gray, Fl. I., 340. 

 0, r/altotxis, Nutt. Torr. & Gray, Fl. I., 340. 

 0. scricca, Nutt. Torr. & Gray, Fl. I., 339. 



Dry banks on the Eed River and Saskatchewan. (Douglas.) Prairies 

 in the valleys of the Eocky Mountains. {Druinmond.) Very abundant 

 throughout the ])rairie region. {3Iacoun.) North Antler Creek, 

 White Mud Piver, and First Crossing of the Sourig, N.W.T. ; always on 

 dry ground. {Dawson.) 



(52;».) O. nana, Nutt. 



.^ U. urgentaUi, Pursli. Hook. Fl. I., 140. 



Woody country, Lat. 54°-64°. {Richardson.) 

 (530.) O. nigrescens, Fisch. Hook. Fl. I., 147. 



Island of St. Lawrence in Behring's Straits. {De Candolle.) 



(531.) O. splendens, Dougl. 



On limestone rocks of the Red River and south to Pembina. (Douglas.) 

 Very abundant from Brandon, westward to the Rocky Mountains, 

 throughout the prairie region. {Macoun.) Turtle Mountain, N.W.T. 

 {Daicson.) 



Var. Richardsoni, Hooh. Fl. L, 148. 



O. oxi/phi/lla,'R\chardii. in Frankl. Jonrn. 17. 



From Cumberland House on the Saskatchewan, north to Fort Frank- 



