STANDLEY FLORA OF GLACIER PARK. 421 



Flower heads not very sticky or, if somewhat so, the leaves opposite. 

 Pappus none or of 2 awns or scales or of chafflike scales. 



Leaves arrow-shaped or triangular, covered with matted white hairs on both 

 sides; flower stems leafless or nearly so .... 15. BALSAMOS.RHIZA. 

 Leaves never arrow-shaped or triangular, green; stems leafy. 



Leaves entire or toothed ; rays not lobed 16. HELIANTHUS. 



Leaves, at least some of them, lobed; rays 3-lobed at the apex. 

 Leaves with broad lobes, or most of the leaves only toothed: bracts not 



,xn 2 series; rays 1.5 to 3 cm. long 19. GAILLARDIA. 



Leaves with linear lobes; bracts in 2 series; rays less than 1 cm. long. 



18. HYMENOXYS, 



Pappus of numerous bristles. 



Leaves all or mostly opposite 25. ARNICA- 



Leaves alternate. 

 Bracts in one series and about equal in length, a few short ones sometimea 

 present at the base of the head; plants usually succulent. 



26. SENECIO. 

 Bracts in several series, very unequal, overlapping; plants not succulent. 

 Heads numerous on each stem, small, rarely more than 5 mm. broad. 



5. SOLIDAGO. 



Heads 1 or few on each stem, large, usually more than 1 cm. broad. 



Leaves entire; plants long-hairy; leaves thin . . . 3. CHRYSOPSIS. 



Leaves toothed; plants glabrous or very finely hairy; leaves thick and 



stiff • . . 4. PYRROCOMA, 



1. COLEOSANTHUS Cass. 



1. Coleosanthus grandiflorus (Hook.) Kuntze. Dry cliffs on Altyn Peak and along 

 Appekunny Creek; rock slides below Sperry Chalets; scarce. Wash, and Oreg. to- 

 Alta. and N. Mex. {BrickclUa grandijiora Ell.) — Perennial herb, 30 to 60 cm. high^ 

 slightly hairy; leaves mostly opposite, triangular, stalked, with rounded teeth; 

 heads 12 to 15 mm. high, in a small dense cluster; flowers pale dull yellow; pappus 

 of numerous bristles. 



2. GRINDELIA Willd. 



f 

 1. Grindelia perennis A. Nels. Gum-plant. Occasional on the east slope at low 



altitudes, on open hillsides or prairie, often about dried-up ponds. Alta. and Sask. 

 to Colo. — Perennial, 15 to 40 cm. high, often forming dense clumps, glabrous or nearly 

 so; leaves alternate, oblanceolate or oblong, 2 to 7 cm. long, thick, toothed; heads few 

 or numerous, 1 cm. high, very gummy, with long yellow rays; pappus of a few coarse 

 bristles, soon falling from the achenes. 



Easily recognized by the sticky heads. An extract of some species of Grindelia is 

 employed as a remedy for the effects of poison ivy. The bright yellow heads ai'e 

 conspicuous on the prairie. 



3. CHRYSOPSIS Nutt. 



1. Chrysopsis villosa (Pursh) Nutt. Golden aster. Common at low and middle 

 altitudes, usually on open slopes, occasionally found near or above timber line. 

 Idaho to Minn., Tex., andN. Mex.- — Perennial, 15 to 40 cm. high, usually forming dense 

 clumps, short-hairy; leaves alternate, entire, 1.5 to 4 cm. long, obovate or oblanceolate^ 

 finely hairy; heads few or numerous, about 1 cm. high, stalked; rays bright yellow; 

 pappus of yellowish white bristles. 



A rather .showy but imattractive plant. 



