[Vor. 8 
180 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
densely tufted, 1 to 3 dm. high; lower leaves oblanceolate, 
entire, dentate towards the apex only or even pinnatisect, 
gradually narrowed at the base into a slender petiole, thick 
and firm in texture, including the petiole 2.5 to 10 em. long, 
.5 to 1 em. broad; upper stem-leaves becoming sessile and 
much reduced ; inflorescence a terminal few to several-headed 
corymbose eyme; heads 8 to 10 mm. high, radiate; involucre 
eampanulate, sparingly calyculate; bracts of Ше involucre 
13 to 21, linear-lanceolate, 6 to 8 mm. long, glabrous; ray- 
flowers 10 to 12, rays yellow; disk-flowers numerous; achenes 
usually hirtellous on the ribs. 
Distribution: Manitoba to Texas, and west to Nebraska, 
Colorado, and New Mexico. 
Specimens examined: 
Manitoba: sand hills at Brandon and Old Wives Lakes, 
22 June, 1887, Macoun 22 (Gray Herb.); on open prairie, 
south of Sewell, 12 June, 1876, Macoun (Geol. Surv. Canada 
Herb. 12232); gravelly or rocky places, Flat Creek, “N. 
W. T," 20 June, 1880, Macoun 103 (Geol. Surv. Canada 
Herb. 14796) ; Stewarts Lake Mountain, 21 June, 1875, Ma- 
coun 14777 in part (Geol. Surv. Canada Herb.) ; north of Car- 
berry, 14 June, 1906, Macoun £ Herriot (Geol. Surv. Canada 
Herb. and Field Mus. Herb.); without definite locality, coll. 
of 1898, E. S. Thompson (Mo. Bot. Gard. Herb.). 
North Dakota: on sand hills, MeHenry Co. 13 July, 
1899, Lunell 24 (Gray Herb.). 
South Dakota: Hot Springs, Fall River Co., 6 June, 1893, 
Schenck (Mo. Bot. Gard. Herb.). 
Nebraska: Long Pine, 14 May and 4 June, 1893, Rutter 
(U. S. Nat. Herb.) ; sand hills on Middle Fork, Loup River, 
near Thedford, Thomas Co., 15 June, 1893, Rydberg 1311 
(Gray Herb. and U. S. Nat. Herb.) ; in dry sandy soil, Hal- 
sey, 1 and 2 June, 1903, Мей Ф Knopf (Mo. Bot. Gard. 
Herb.); Hershey, 20 May, 1903, Mell 59 (U. S. Nat. Herb.) ; 
Franklin, coll. of 1893, Labourne (Mo. Bot. Gard. Herb.); 
Loup Fork, Hayden (Mo. Bot. Gard. Herb.). 
