me:moirs of the new york botanical garden. 95 



1-3 mm. wide, thick, half-rounded on the back, round-channeled ; 

 umbel manj'-flowered, nodding ; involucre two-leaved, almost 2 cm. 

 long ; perianth-segments elliptic-ovate, obtuse, about 5 mm. long, 

 generally pink with a darker midvein ; stamens and style exserted ; 

 capsule with 6 rather prominent crests at the summit. 



It is nearest related to Allium cernuuui., differing in the leaves, 

 the more slender less ridged scape, the larger involucre, and the 

 more distinct midveins of the perianth-segments. In the eastern Al- 

 lium cernuum, the leaves are almost flat and more or less keeled. In 

 A. nutans, there is no keel and the channel is rounded as well as the 

 back. The leaves of A. cernuuvi are also much wider, i. e., from 3 

 to 7 mm. wide; the flowers are generallv also much paler in. that 

 species and the perianth-segments with an indistinct midvein. A. 

 milans grows on dry hills at an altitude of 1500-2000 m. 



Montana: Lima, 1895, Rydberg, 2602: Elk Mts., i8g6, Rlod- 

 man,j^i: Helena, 1891,/^. D. Kclsey ; Indian Creek, July 22, 1897, 

 Rydbcrg d- Bcssey, jSjO (type); Trail Creek, 1887, Tweedy, 6j ; 

 Salesville, 7^. W. T. Shazv ; Silver Bow Co., Mrs. Mooi'e; Sixteen 

 Mile Creek, 1883, Scribncr, 2^/ : Plains near Snowy Mts., 1882, 

 Canby ; Bannock City, 1880, Watson; Ross' Hole, 1880, Watson. 



Yellowstone Park: 1884, Ticcedy, go; 1885,50/. 



Other specimens of A. nutans are the following : 



South Dakota: Custer and Bull Springs, 1892, Rvdberg, lojj. 



Wyoming : Wallace Creek, 1894, A. Xelson, 661 ; Laramie Peak, 

 1895, i6jj. 



Washington: Bellingham Bav, 1890, Sul'sdorf, iooj; Puget 

 Sound, 1838-42, Wilkes'' E.xped., J2. 



Vancouver Island: Mt. Finlayson, iS'S'] , John Ma conn. 



Allium brevistylum Wats. Bot. King's Exp. 5 : 350 [Man. R. M. 



347; Wats. Rev. 226]. 



In wet and shady places up to an altitude of 2500 m. 



Montana: Elk Mis., i8g6, Flodnian, jj2 ; Park Co., 1887, 7^. 

 Tzveedy ; Bridger Mts., June 18, 1897, Rydbcrg & Bessey, j8j6 ; 

 Spanish Basin, June 26 and July i , 38 j2, jSjj and j8jj ; Jack Creek, 

 July 14, 3834; Belt Park, 1886, R. S. Williams, 2g; Bear Creek, 

 1887, Tzveedy,6g; Gallatin Co., Mrs. Alderson; Bozeman Pass, 

 1883, Canby, 31'j ; Warm Springs, Crow Creek, 1883, Scribncr, 

 280; Shinberger's Caiion, 1880, Watson. 



Yellowstone Park: 1888, Rev. Dr. Chas. H. Hall; 1884, 



