[Vol. 9 



140 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



(N. Y. Bot. Gard. Herb.) ; low soil, forks of St. Mary's River, 

 alt. 1000 m, 3 July, 1895, Leiberg 1149 (U. S. Nat. Herb.) ; 

 growing in water, pools near Moscow, but maturing macro- 

 spores and microspores in mud, 24 June, 1897 and 30 July, 

 1898, Henderson (Gray Herb.) ; about forest, Nez Perces Co., 

 alt. 3500 ft., 30 July, 1896, A. A. & E. Gertrude Heller 3482 

 (Mo. Bot. Gard. Herb., U. S. Nat. Herb., and Univ. Minn. 

 Herb.); in mud, Warrens Meadows, Eastern Latah Co., 2 

 July, 1 898, Henderson 2978 (Mo. Bot. Gard. Herb.) ; in water 

 or mud, Moscow, 24 June and 2 August, 1898, Henderson 

 (Mo. Bot. Gard. Herb.) ; Moscow, 30 May, 1897, Henderson 

 2894 (Mo. Bot. Gard. Herb.) ; wet shores, Lake Coeur d'Al- 

 ene, alt. 650 m., 1 October, 1895, Leiberg 1656 (U. S. Nat. 

 Herb.); wetj shores of Lake Pend d'Oreille, alt. 650 m., 2 

 October, 1895, Leiberg 1663 (U. S. Nat. Herb. ) ; lake shore, 

 Sand Point, 24 August, 1901, Umbach (U. S. Nat. Herb.). 



Washington: near Spangle, Spokane Co., 28 June, 1884, Suks- 



dorj 2369 (Mo. Bot. Gard. Herb.); in slow shallow stream, 

 Falcon Valley, 30 July, 1885, Suksdorf 833 (Mo. Bot. Gard. 

 Herb, and U. S. Nat. Herb.) ; in slow shallow stream, Falcon 

 Valley, 6 September, 1886, Suksdorf 2370 (Mo. Bot. Gard. 

 Herb.) ; in mud in shallow water, becoming dry in summer, 



Spokane Co., 10 June and 11 July, 1889, Suksdorf 950 

 (Mo. Bot. Gard. Herb, and U. S. Nat. Herb.); Rock Creek, 

 near Mica Peak, Spokane Co., 5 June, 1889, Suksdorf 2368 

 (Mo. Bot. Gard. Herb.); near Rockland, Klickitat Co., 15 

 April, 1890, Suksdorf 1235 (Mo. Bot. Gard. Herb.) ; in a 

 ditch, Falcon Valley, 30 July and 16 October, 1895, Suksdorf 

 '372 ( Mo. Bot. Gard. Herb.); Falcon Valley, Klickitat Co., 

 16 July, 1896, Suksdorf 2613 (Mo. Bot. Gard. Herb.); in 

 shallow water, Falcon Valley, 16 July, 1896, Suksdorf 2 47 9 

 (Mo. Bot. Gard. Herb.) ; Falcon Valley, 28 June, 1898, Suks- 

 dorf 2616 ( Mo. Bot. Gard. Herb.) ; Rockland. Klickitat Co., 

 10 May, 1899, Suksdorf 261$ (Mo. Bot. Gard. Herb.); 

 muddy banks of Pend d'Oreille River near Cusick, 21 Sep- 

 tember, L903, Piper 4209 (Mo. Bot. Gard. Herb, and U. S. 

 Nat. 1 1 orb.). 



Oregon: on the borders of ponds, The Dalles, 1 June and 1 



August, 1880, ./. <fe T. J. Howell (Mo. Bot. Gard. Herb, and 

 U. S. Nat. Herb.), type; The Dalles, October, 1880, T. J. 



