[Vor. 11 
160 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Distribution: common in wet places from Montana to northern 
Mexico, west to Alaska and California. Adventive іп Con- 
necticut and in various parts of Europe and in New Zealand. 
Specimens examined: 
Montana: Kranich's Grove, St. Helena, July, 1892, Harz (М); 
near Butte, 5500-6000 ft. alt., July, 1893, Moore (M); Spanish 
Creek, 15 July, 1901, Vogel (R. Mt.); wet ground, Gallatin 
River, near Bozeman, 14 July, 1905, Blankinship 389 (M); 
near Red Lodge, 25 July, 1893, Rose 13 (М); Jack Creek Cañon, 
7000 ft. alt., 15 July, 1897, Rydberg & Bessey 4945 (R. Mt.). 
Wyoming: Medicine Bow Mts., Lieut. Bryan's Exp., Aug., 1856, 
Engelmann (M); Garfield Peak, 29 July, 1894, Nelson 688, 
in part (M and В. Mt.); Jackson's Hole on Snake River, 6000 ft. 
alt., 15 June, 1860, Hayden (М); Henry's Fork of Snake River, 
5400 ft. alt., 18 June, 1860, Hayden (M); sunny, moist places, 
Sherman, 27 July, 1913, Macbride 2541 (M); springy brooks, 
head of Middle Fork of Powder River, Big Horn Co., 19 July, 
1901, Goodding 305 (Cornell, M, and R. Mt.); Little Goose 
Creek, 16 July, 1896, Nelson 2372 (В. Mt.); vicinity of Big 
Horn Mt., July-Aug., 1897, Williams (В. Mt.); on the wet 
bank of Trout Lake, 14 July, 1899, Nelson & Nelson 5841 
(В. Mt.); in а bog, Yellowstone River near Junction Butte, 
9 July, 1899, Nelson & Nelson 5748 (Cornell, M, and R. Mt.); 
North Vermilion Creek, 17 July, 1897, Nelson 3573 (R. Mt); 
swamps at Willits Spring, 28 June, 1909, Willits 201 (R. Mt.); 
Centennial Valley, 17 Aug., 1895, Nelson 1670 (Pomona); 
rolling plains between Sheridan and Buffalo, 3500-5000 ft. alt., 
15 June-15 July, 1900, Tweedy 3422 (В. МЫ); in а boggy 
stream, Bird's Eye, 25 June, 1910, Nelson 9394 (В. Mt); 
Laramie Hills, 28 June, 1891, Buffum 704 (В. Mt.): 
Idaho: Henry Lake, Fremont Co., 6000 ft. alt., 14 July, 1920, 
Payson & Payson 2018 (Cornell and M); wet sand, Boise, 
Aug., 1911, Clark 290 (M. and R. Mt.); Elk Creek, Shoshone 
Co., July, 1900, Abrams 813 (Pomona); along St. Mary's 
River, Coeur D'Alene Mts., 26 June, 1895, Leiberg 1071 (M 
and R. Mt.); Valley of North Fork of Coeur D’Alene River, 
11 Aug., 1895, Leiberg 1519 (М and В. Mt.); margins of tbe 
Blue Lakes, Twin Falls and Shoshone Falls, 25 June, 191^ 
