MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 427 



Montana: Willow Creek, 1888, 7?. S. Williams, 783; Boze- 

 man, 1896, Flodnian^ 8go. 



Chrysanthemum Leucanthemum L. Sp. PL 888 [Syn. FL i- : 365; 



Man. R. M. 199; 111. Fl. 3: 457; Bot. Cal. i: 401]. 



The " Ox-eye Daisy," a native of Europe, has established itself in 

 the East. In the Rock}' Mountain region it is found only occasion- 

 ally introduced. 



Montana: Lewis and Clarke Co., Mrs. Muth ; Pyrenees, J/r^. 

 Moore. 



Sphaeromeria argentea Nutt. Trans. Am. Phil. Soc. (II.) 7: 402; 



Tanacetum NuttaUiiToxx. & Gray, Fl. N. Am. 2-: 415 [Syn. Fl. 



i": 367; Man. R. M. 199]. 



The genus differs from Tanacehim proper in having pappus, obso- 

 lete or none, curved or conical receptacle, less dissected or entire 

 leaves, and low habit. I have seen no specimen from Montana, but 

 it may be found there, as it occurs in the neighboring states. 



Yellowstone Park: 1873, C. C. Parry, ijq. 



Sphaeromeria capitata Nutt. Trans. Am. Phil. Soc. (II.) 7: 402; 



Tanacctuni capitatuui Torr. & Gra}^, Fl. N. Am. 2 : 415 [Syn. Fl. 



i': 367; Man. R. M. 199]. 



Rare in southern Montana and the Park, at an altitude of about 

 3000 m. 



Montana : Beaver Head Rock, 1888, Tzvecdy, 18. 



Yellowstone Park: 1873, ^' ^- P^f'f'y, 178. 



Artemisia spinescens D. C. Eaton, King's Exped. 5 : 180 [Syn. Fl. i- : 



368; Man. R. M. 199; Bot. Cal. i: 404]. 



Rare in southern Montana. It grows on dry barren hills, up to 

 an altitude of 200 m. 



Montana: Beaver Head Co., 1888, Tzuecdy, ig. 



Artemisia Canadensis Michx. Fl. Bor. Am. 2: 129 [Syn. Fl. i^ : 



368; Man. R. M. 200; 111. Fl. 3: 462]. 



In the prairie region, up to an altitude of about 2000 m. 



Montana: Columbia Falls, Mrs. Kennedy; Fridley, 1887, 

 Tzueedy, 312 ; Clear Creek, 1883, Canhy, igy. 



Artemisia borealis Pall. Reise, 3: 129 [Syn. Fl. i- : 368; Man. R. 



M. 200; 111. Fl. 3: 462]. 



No specimen has been seen by me from the region, but from its 

 range it may be expected to be found on some of the highest peaks. 



