235 
Sandy soil, Colgate, near Glendive, Dawson County, Montana; September 5 
(No. 1005). 
Helenium autumnale L. Sp. Pl. ii, 886 (1753). 
River banks, Colgate, near Glendive, Dawson County, Montana; September 
6 (No. 1022). 
Gaillardia aristata Pursh, FI. ii, 573 (1814). 
Common in sandy soil, Upper Ferry, Ciearwater River, above Lewiston; May 
30 (No. 273). 
Gaillardia pulchella Foug. Mem. Acad. Sci. Par. 1786, 5 (1788). 
, Three miles south of Viola, Latah County; June 26 (No. 497). 
Achillea millefolium L. Sp. Pl. ii, 899 (1753). 
Common on hillsides, valley of Clearwater River, Nez Perces County; May 
9 (No. 147). 
Matricaria matricarioides (Less.) Porter, Mem. Torr. Club, v, 341 (1894); Arte- 
misia matricarioides Less, Linniea, vi, 210 (1831); Matricaria discoidea DC. Prodr. 
vi, 50 (18387). 
Frequent in moist places, Upper Ferry, Clearwater River, Nez Perces County; 
May 9 (No. 149). 
Artemisia dracunculoides Pursh, FI]. ii, 742 (1814). 
River banks near Spokane, Washington; August 16 (No, 908), Sandy soil, 
Thompson ¥alls, Montana; August 27 (No. 975). 
Artemisia frigida Willd. Sp. Pl. iii, 1888 (1804), 
Sandy soil, Thompson Falls, Montana; August 28 (No. 981). 
Artemisia gnaphalodes Nutt. Gen. ii, 145 (1818), 
Shores at Farmington Landing, lake Cur d’Alene; July 6 (No, 569). On pre- 
cipitous ledges of granite, valley of Lake Pend d’Oreille; July 27 (No, 754). 
Rocks on lake shore, same locality; August 1 (No. 822), Sandy soil at Spokane, 
Washington; August 16 (No. 902). 
Artemisia longifolia Nutt, Gen, ii, 142 (1818). 
Plains, Colgate, near Glendive, Dawson County, Montana; September 6 (Nos. 
1011, 1014). 
Artemisia trifida Nutt. Trans. Amer, Phil. Soc. vii, 398 (1841). 
Sandy soil at Bonner, Missoula County, Montana; August 30 (No, 984). Plains, 
Colgate, near Glendive, Dawson County, Montana; September 6 (No. 1010). 
Tussilago sagittata Pursh, Fl. ii, 531 (1814); Nardosmia sagittata Hook. Fl. Bor. 
Amer. 1, 307 (1834); Petasites sagittata Gray, Bot. Cal. i, 407 (1876). 
Marshes, Granite Station, Kootenai County; July 30 (No, 805). 
Arnica alpina Olin, Mon. Arn. Upsala (1799). 
Frequent on hillsides, vicinity of Lake Waha, Nez Perces County; May 24 
(No. 244). Rocky soil along Clearwater River, Nez Perces County; June 6 (No. 
325). 
Arnica cordifolia Hook. Fl. Bor. Amer. i, 331 (1833). 
Frequent in woods and canyons, vicinity of Lake Waha, Nez Perces County; 
May 20 (No. 197). 
Arnica latifolia Bong. Veg. Sitch. 147 (1833), 
On precipitous ledges of granite, valley of Lake Pend d’Oreille; July 27 
(No. 753). 
Senecio aureus L. Sp. Pl. ii, 870 (1753). A large form, 
Meadows at Granite Station, Kootenai County; July 30 (No. 803). 
Senecio canus Hook. F1. Bor. Amer. i, 333, t. 116 (1834), 
Sandy plains, valley of Spokane River, Kootenai County; July 18 (No. 668), 
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