221 
Besides Sandberg’s 748 (Idaho Exp., 1892), there are in the National Herbarium 
Rey. F. D. Kelsey’s plant from Helena, Montana (July, 1888), in fruit; and Frank 
Tweedy’s plant from Yellowstone Park (July, 1885), in flower. 
South end of Lake Pend d’Oreille; July 27 (No. 748). 
Onobrychis sativa Lam. Fl. Fr. ii, 652 (1815). 
Meadows, near Viola, Latah County; June 26 (No. 494). 
Vicia americana Muhl.; Willd. Sp. PI. iii, 1096 (1801). 
Common in copses, valley of Hatwai Creek, Nez Perees County ; April 28 (No. 65). 
Frequent at head of Little Potlatch River, Latah County; June 16 (No. 413). 
Vicia americana truncata Nutt.; Brewer, Bot. Cal. i, 158 (1876). 
Copses, valley of Big Potlatch River, Nez Perees County; June 4 (No. 314). 
Woods, valley of Spokane River, Kootenai County; July 17 (No. 667). 
Lathyrus nevadensis Wats. Pree. Amer. Acad. xi, 133 (1876), 
Woods, at 2,700 meters altitude, Wiessner’s Peak, Kootenai County; July 8 
(No. 611). 
Lathyrus palustris L. Sp. Pl. ii, 733 (1753). 
Sandy hillsides, on Little Potlatch River, Nez Perees County; June 13 (No. 383). 
Lathyrus bijugatus White, Bull. Torr. Club, xxi, 457 (1894). 
Rocky ground at 900 meters altitude on Big Potlatch River, Nez Perces County ; 
June 9 (No. 362). Not found elsewhere. 
Lathyrus bijugatus sandbergii White, Bull. Torr. Club, xxi, 457 (1894). 
Frequent on hillsides, head of little Potlatch River, Latah County; June 16 
(No. 412), 
Lathyrus venosus californicus Wats. Proc. Amer. Acad. xi, 133 (1876). 
On slopes, near Upper Ferry, Clearwater River, above Lewiston; April 28, 
(No. 74). 
ROSACES. 
Prunus demissa (Nutt.) Walp. Rep. ii, 10 (1843); Cerasus demissa Nutt.; Torr, & 
Gr. Fl. i, 411 (1840). 
Common in copses, island in Clearwater River, near Upper Ferry, above 
Lewiston; May 2 (No. 97). Copses at Thompson Falls, Montana; August 27 
(No. 977). . 
Prunus emarginata mollis Brewer, Bot. Cal. i, 167 (1876). 
Cominon in copses on Hatwai Creek, Nez Perces County; May 5 (No. 137). 
Prunus subcordata Benth. Pl. Hartw. 308 (1848), 
Rich woods, at 900 meters altitude, Craig Mountains, Nez Perces County ; 
May 17 (No. 203). 
Opulaster capitatus (Pursh) Kuntze, Rev. Gen. Pl. ii, 949 (1891); Spirwa capitata 
Pursh, FI. i, 342 (1814). 
Deep canyons, near Farmington Landing, Lake Cceur d’Alene; July 7 (No. 575). 
Opulaster monogynus (Torr.) Kuntze, Rev. Gen. PI. ii, 949 (1891); Spirwa monogyna 
Torr. Ann. Lyc. N. Y. 1i,.194 (1828). 
Frequent in copses, Upper Ferry, Clearwater River, above Lewiston; May 30 
(No. 1042). 
Opulaster opulifolius (L.) Kuntze, Rev. Gen. Pl. ii, 949 (1891); Spiraa opulifolia 
L. Sp. Pl. 1, 489 (1753), 
Frequent in copses, Upper Ferry, Clearwater River; May 30 (No. 274). 
Spireea arizfolia Smith, in Nees’s Cycl. xxxiii (1819), 
Shere of Lake Cour d’Alene, near Farmington Landing; July 7 (No. 583), 
Spireea betulifolia Pallas, Fl. Ross. 1, 38, t. 16 (1784). . 
No, 539 1s not typical. It has the corymb somewhat elongated, as in S, salici- 
folia, and may be a hybrid. 
