Rydberg : Rocky Mountain flora 137 



high, slightly villous above ; involucre campanulate, 1.5-2 cm. 

 high ; bracts oblong-ovate, acute, nearly glabrous, often with a rose- 

 colored spot in the middle ; corolla rose-colored ; achenes about i 

 cm. long, as well as the short beak strongly striate. 



In habit and flowers this resembles most A. aurautiaca, but 

 is glabrous and glaucous, and the achene with its short beak places 

 it in the A. glauca group. 



Colorado : Bear River, 20 miles below Steamboat Springs, 

 1899, Ostcrhout. 



Agoseris humilis sp. nov. 



Leaves spreading or ascending, oblanceolate or linear-oblan- 

 ceolate, 6-10 cm. long, entire or denticulate, glabrous or slightly 

 hairy on the short petioles; scape 1-1.5 (seldom 2) cm. high, 

 slightly villous below the head ; involucre 1.5-2 cm. high ; bracts 

 linear-lanceolate, slightly villous-ciliate ; corolla rose-purple, or 

 at first orange; achenes 12-15 """t^- lo^g- ^^'ith a long, scarcely 

 striate beak. 



This is closely related to A. gracilens, but differs in the low 

 habit, small heads and more spreading leaves. It grows at an 

 altitude of about 2700 m. 



Colorado: Ironton Park, 1901, Undcrzvood & Selby jo8 

 (type); Tennessee Pass, 1902, Ostcvlioiit 2^ 10. 



Agoseris rostrata sp. nov. 



Leaves narrowly linear-lanceolate, about 2 dm. long, usually 

 more or less laciniate with linear lobes, glabrous and glaucous ; 

 scape 2-6 dm. high, more or less villous, especially under the 

 head ; involucre fully 3 cm. high ; outer bracts oblong or ovate, 

 obtuse, glabrous, about half as long as the elongated linear or 

 linear-lanceolate inner ones ; corolla orange or purple ; achenes 

 iully 2 cm. long, with a very long and slender, not striate, beak. 



In habit this most resembles A. data, but the bracts and the 

 achenes associate it with A. grandiflora. 



Colorado: Lower Boulder Canon, 1901, Osterliont j^yS 

 (type) ; between Sunshine and Ward, 1902, Tivecdy 48 gj. 



Taraxacum leiospermum sp. nov. 



Leaves spreading, oblanceolate, less than i dm. long, dark- 

 green, obtuse or acutish, retro rse-dentate, rarely lobed ; scape 

 about I dm. high, slightly villous when young ; outer bracts 7- 

 10 mm. long, lanceolate with spreading tips; inner linear, about 



