CARDUACEAE. 
3. Wyethia scabra Hook. Dry plains from Wyo. to N. M. and Utah.— 
Alt. about 5000 ft.—La Plata Valley; base of Carisa (Brandegee ). 
50. HELIANTHUS L. Sun-flower. 
H. petiolaris. 
orgyalis. 
H. subrhomboidens. 
Annuals; leaves broad, ovate or cordate or lanceolate; disk purple. 
Bracts ciliate, hispid, ovate or obovate, abruptly acuminate. 
Lower leaves, at least, ovate or cordate, distinctly toothed. 
1. H. lenticularis. 
Leaves lanceolate or narrowly deltoid, minutely toothed or entire. 
2. H. aridus. 
Bracts not ciliate, canescent-strigose, lanceolate. 3 
Perennials. 
Disk dark brown or purple. 
Leaves linear. 4. H 
Leaves rhombic-ovate. 5 
Disk yellow or light brownish. 
Bracts broadly lanceolate, acute, appressed. 6. H. pumilus. 
Bracts narrowly lanceolate, acuminate, more or less spreading or squarrose 
Stem more or less scabrous or hispid ; the upper leaves subsessile. 
Leaves and stem very scabrous. 7. H. Maximiliani. 
Leaves scabrous above, hirsute beneath ; stem more or less hirsute 
8 . 
Stem, except the upper portion, glabrous and glaucous 
few hairs) ; leaves mostly all petioled. 
Leaves coarsely toothed; bracts hirsute-ciliate. 9. H. grosseserratus. 
Leaves distantly and minutely denticulate or subentire; bracts 
ciliate or ciliate merely at the base. 10. H. fascicularis. 
H. giganteus. 
(rarely hirsute with 
not 
1. Helianthus lenticularis Dough ( H. annus A. Gray, in part; not L.) On 
plains and in alluvial soil from N. D. and Ida. to Tex. and Ariz.—Alt. 4000- 
7000 ft.—Canon City; Valley Spur; Black Canon; Ft. Collins; valley of 
Upper Arkansas River; Huerfano Valley, near Gardner; Boulder; Pennock’s 
mountain ranch. 
2. Helianthus aridus Rydb. In arid soil from Mont, to Neb. and N. Mex. 
—Alt. 4000-7000 ft.—Manitou. 
3. Helianthus petiolaris Nutt. On dry plains and in waste places from 
Minn., Sask., Mont, and. Ore. to Tex. and Calif.—Alt. 4000-10,000 ft.—Colo¬ 
rado Springs; Ft. Collins; Boulder; Eldora to Baltimore; Wray. 
4. Helianthus orgyalis DC. On plains from Mo. and Colo, to Tex.— 
Southeastern Colorado. 
5. Helianthus subrhomboideus Rydb. ( H. rigidus A. Gray, in part) On 
plains from Man., Sask. and Mont, to Colo, and Neb.—Alt. 4000-8000 ft.—- 
La Pagosa; mountains, Larimer Co.; near Pagosa Peak; Cheyenne Moun¬ 
tain; Bosworth’s ranch, Stove Prairie; Boulder; canon west of Palmer Lake; 
Horsetooth Mountain. 
6. Helianthus pumilus Nutt. On plains and mountains of Wyo. and Colo. 
—Alt. 5000-7500 ft.—Idaho Springs; Canon City; New Windsor; Golden; 
Trail Glen; Horsetooth Gulch; Boulder; Harden’s ranch; foot-hills, Dixon 
Canon; hill south of Horsetooth Mountain; Bosworth’s ranch, Stove Prairie; 
gulch west of Pennock’s; Spring Canon. 
7. Helianthus Maximiliani Schrad. On prairies and in river valleys from 
Man. and Wyo. to Tex.—Alt. 4000-7000 ft.—Sterling, Logan Co.; Black 
Canon of the Gunnison. 
