MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 1 77 



Montana: Electric Peak, Aug. 20, 1897, Bydbcrg d- Bessey, 

 4147 ; Cedar Mountain, July 16, 4148. 



*Dentaria macrocarpa Nutt. ; Torr. & Gray, Fl. N. A. i : 88 [Syn 



Fl.i^: 154]. 



A genus resembling Cardamine, but with the stem leafless below 

 and bearing some leaves above. The basal leaves in this species are 

 rather thick, ternate, and with oblong or obovate sinuately toothed 

 leaflets ; segments of the stem leaves linear. 



Montana: McDonald's Peak, 1883, Canby, 22. 

 Cardamine Breweri Wats. Proc. Am. Acad. 10: 339 [Syn. Fl. i^ : 



157; Man. R. M. 18; Bot. Cal. i: 31.] 



Common in open and damp woods, at an altitude of 1500-2500 m. 

 Sometimes all the leaves are entire and without any lobes on the 

 petioles. 



Montana: Bridger Mts., 1896, Flodman, 4gj ; Spanish Basin, 

 4go; Deer Lodge, 1895, Rydherg\ 2660; Jack Creek, July 15, 1897, 

 Rydherg & Bessey, 4157; Spanish Basin, June 28-July i, 4158, 

 4159 and 4160; Belt Mts., 1886, F. W. Anderson, 2^; Madison 

 Valley, 1888,/^. 7'ztr6'<^_y; Gallatin Co., Mrs Aldcrson; Monarch, 

 1890, R. S. Williams, jdy ; Park Co., 1885, Tzueedy, 21 . 



Yellowstone Park: Upper Falls, Aug. 14, 1897, Rvdberg & 

 Bessey, 4161 ; Lake, Aug. 12, 4162; Mammoth Hot Springs, 1885, 

 Tzueedy, ^72 ; 1884, Tweedy (unifoliolate form) ; Lower Falls, 1871, 

 Ha ydcn . 



* Cardamine Leibergii Holz. Cont. U. S. Nat. Herb. 3: 212. 



Resembles a small specimen of the preceding with simple stem 

 leaves, but differs in the long proliferous rootstock, and the thick 

 somewhat fleshy leaves, which are sinuately toothed with broadly tri- 

 angular teeth. Grows among rocks, at an altitude of 2000-3000 m. 



Montana: Lima, 1895, Rydberg, 266J ; Bozeman Canon, 2664. 

 Cardamine Pennsylvanica Muhl. ; Willd. Sp. PI. 3: 486 [Syn. 



Fl. i' : 158] ; C. hirsiita Brew. & Wats. Bot. Cal. i : 30 [Man. 



R. M. 19] ; notL. 



The description in Coulter's Manual includes both C. Pennsylva- 

 nica and C. hirsuta Li. The former is a taller glabrous plant, gener- 

 ally over 3 dm. high, with spreading pedicels, while the latter is 

 commonly less than 2 dm. tall, hispidulous above and with erect pods. 



Montana: Melrose, 1895, Rydberg, 2662; Bozeman Canon, 

 2661 ; Jefferson City, 1883, Scribner, 8f. 



