378 COMPOSITAE. 



523. ERIOPHYLLUM. 



Perennial herbs, sometimes shrubby at base; leaves usually 

 alternate, entire or pinnately or ternately parted or lobed; 

 ray-flowers present, fertile; involucre campanulate or obovoid; 

 tegules erect, commonly united at base, oval or oblong; pappus of 

 nerveless and mostly pointless scales; throat or limb of disk- 

 corollas rather narrow; style-branches truncate or rarely minutely 

 tipped; akenes narrow, mostly 4-angled. 



Eriophyllum lanatum (Pursh) Forbes. Perennial, erect or decumbent at 

 base, loosely white- woolly throughout; leaves spatulate or cuneate-obovate, 

 the lowermost and upper ones often entire, the others 3-7-lobed or parted; 

 heads long-pcduncled; involucre lanate, campanulate, 10-12 mm. high; 

 tegules 8-12, oblong, obtuse; ray-flowers 6-15, golden-yellow; disk-corollas 

 glandular; akenes glabrous; pappus short. 



In gravelly soil, common and variable. 



524. HULSEA. 



Perennial, viscid-pubescent, balsamic-odorous herbs with 

 alternate sessile leaves and solitary or scattered large heads of 

 many yellow flowers; involucre hemispheric, the herbaceous 

 rather loose linear-lanceolate tegules in 2-3 series; receptacle 

 flat, naked; ray-flow^ers numerous; disk flowers with the throat 

 larger than the tube; style branches thickened at the obtuse tips; 

 akenes linear-clavate, pubescent; pappus of 4 truncate entire or 

 lacerate scales. 



Hulsea nana Gray. Perennial with branched rootstocks; herbage viscid 

 and villous and somewhat lanate; stems 10-20 cm. high; leaves mostly basal, 

 oblong-spatulate, pinnatifid or incised, narrowed into a margined petiole; 

 head solitary, peduncled; involucre 10-12 mm. high; tegules lanceolate; ray- 

 flowers yellow; pappus scales fimbriate, as long as the villous akene. 



In loose volcanic rock at high altitudes. Mount Rainier and southward. 



525. GAILLARDIA. 



Pubescent herbs; leaves alternate, entire or incised or even 

 pinnatifid; heads solitary and long-peduncled, large; ray-flowers 

 yellow or partly dark-purple, sterile; disk-flowers usually purplish 

 or brownish; tegules in 2-3 series, the outer larger and foliaceous; 

 receptacle convex or hemispherical, with one or more awns among 

 the flowers resembling chafi^; pappus of 6-10 hyaline chafi^y 

 scales each with a prominent midrib which is prolonged into a 

 naked awn, or in the sterile ray-flowers, scales awnless; akenes 

 oblong, top-shaped, each surrounded by a tuft of hairs. 



Gaillardia aristata Pursh. Perennial, erect, 30-60 cm. high, rough-pubes- 

 cent; lower leaves spatulate, long-petioled, the upper sessile, all entire or 

 more or less pinnately lobed, 5-12 cm. long; heads long-peduncled; involucre 

 hairy, the lanceolate acuminate tegules unequal, the longest about 1 cm.; 

 disk-flowers dark-purple; ray-flowers 10-18, yellow, purplish at base, 15-20 

 mm. long; bristles of the receptacle as long as the akenes or longer. 



Prairies, rare in our limits. 



