174 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



* Schoenocrambe pinnata Greene, Pittonia, 3: 127. 



Taller than the"tirst species, apparently not branched, glabrous and 

 ■glaucous and with at least the lower leaves deeply pinnatifid. I 

 have seen one specimen which may be refered here. 



Montana: Beaverhead Co., 1888, Tzuccdv, iij. 



* Barbarea Americana. 



Barharca vulgaris gracilis Wats. Bot. King's Exp. 5 : 16 ; not DC. 



Apparently biennial, 3-4 dm. high, glabrous, strict, often varie- 

 gated with red. Basal leaves broadly elliptic, wav}', simple or 

 with one or two pairs of small lobes on the petiole ; lower stem-leaves 

 similar, but with the petiole enlarged at the base and clasping; the 

 upper stem -leaves oblong, sessile, sinuateh' lobed or toothed ; flowers 

 light yellow ; petals narrowly spatulate, 2-4 mm. long; pod 2—2.5 

 cm. long and scarcely 2 mm. wide, slightly angled, ascending, or 

 at first nearly erect, on pedicels 2-3 mm. long ; style very short, 

 scarcely 0.5 mm. long ; seeds ovoid, grayish brown, fineh' pitted. 



This has been mistaken for the introduced B. Barharca (L.) 

 MacM. {B. vulgaris R. Br.), but has much smaller flowers, shorter 

 pedicels and styles, and is a native. Ascends in the mountains to an 

 altitude of 3000 m. 



Montana: 1845, C. A. Gcycr ; Spanish Basin, 1896, Flodman^ 

 Sio; Bridger Mountains, June 10, 1897, Rydberg tf- Bessey, 4145 

 (type) ; Spanish Basin, July i, 41^5 ^ Basin, 1892, Kelsey. 



Yellowstone Park: Blacktail Deer Creek, 1885, Tzvccdv, jy4. 



NoRTHW^EST Territory : Richardson (Franklin's Journey). 



Nevada: East Humboldt Mountains, 1868, S. Watson, 66. 



Brassica arvensis (L.) B. S. P. Prel. Cat. X. Y. 5 [111. Fl. 2: 

 119]; Sinapsis arvensis L. Sp. PI. 66'^^: Brassica Sinapistruni 

 Boiss. Voy. Espagne, 2 : 39 [Syn. Fl. i' : 133 ; Man. R. M. 23]. 

 Introduced in fields and around dwellings. 

 Montana: Helena, 1891, R. D. Kelsey. 



* Brassica Napus L. Sp. PI. 66(). 



Escaped from cultivation ; distinguished by its glabrous leaves. 

 Montana: Emigrant Gulch, Aug. 22, 1897, Rxdbcrg & Bcssey, 

 423S. 



I^oripa Nasturtium (L.) Rusby, Mem. Torr. Bot. Club, 3': 5 [111. 

 Fl. I : 126] ; Sisynibritun Nashirtiuni L. Sp. PL 657 ; Nasturtium 

 officinale R. Br.; Ait. Hort. Kew. Ed. 2, 4: 109 [Syn. Fl. i' : 

 146; Man. R. M. 24; Bot. Cal. i: 43]. 



