292 COMPOSITE. coleosanthus. 



indrical or campanulate ; the scales imbricated in 2-3 or more 

 series or sometimes nearly equal in a single series. Receptacle 

 flat, naked. Corolla tubular-infundibuliform or often with a 

 campanulate limb, 5-toothed. Anthers included. Branches of 

 the style mostly exserted and elongated cylindraceous or some- 

 what flattened, obtuse. Achenes 5-angled, without intermediate 

 striae. Pappus a single series of very slender capillary bristles. 



E. occidentale Hook Fl. i, 303 Nearly glabrous: stems slender, 8-12 

 inches high, somewhat wordy at base: leaves alternate, rarely opposite, 

 ovate with a truncate or subcordate or roundish base, acute or acuminate, 

 sparingly dentate repand or entire, rather short petioled : cymes small 

 and rather compact, usually paniculate : heads 15-25-flowered : scales of 

 the involucre linear, acute, nearly equal in 1 or 2 series, nearly nerveless; 

 hardly longer than the mature achenes. Corolla white to purple : achenes 

 slender glabrous. On cliffs and in stony places, eastern Washington to 

 southern Oregon, California and Nevada. 



2 COLEOSANTHUS Cass. Diet, x, 36. 

 BRICKELLIA Ell. Sh. ii. 290. 



Herbs or undershrubs with opposite or alternate leaves and 

 variously disposed heads of white or flesh-colored flowers in late 

 summer. Scales of the campanulate involucre imbricated lan- 

 ceolate or linear, the exterior shorter, none herbaceous, Recep- 

 tacle flat, naked. ( orolla slender. 5-toothed at summit, the teeth 

 mostly glandular externally. Pappus a single series of barbel- 

 late or subplumose or merely scabrous bristles. Achenes 10-cos- 

 tate or 10-striate. 



* Heads 35— ^O-rlowered, 6-9 lines high, pappus bristles merely sca- 

 brous or densely serrulate. 



'+- Pubescent to almost glabrous: leaves sessile or subsessile all 

 alternate, cordate, seldom an inch long: stems herbaceous from a lig- 

 neous base, 10-16 inches high or more, leafy to the top: heads mostly 

 single, terminating corymbose, leafy branches. 



C. Greenei Ktze. Rev Gran i, 328 B.-icMlia Greene i Gray Very 

 viscid-pubescent: stems slender, 10-16 inches high, numerous from a 

 woody, perennial base, sparingly branched above or simple: leaves ovate, 

 obtuse, somewhat serrate, sessile or somewhat petioled, the uppermost 

 forming accessary loose bracts to the involucre proper: heads terminal. 9 

 lines high; involucral bracts lanceolate and linear, acuminate glabrous: 

 achenes not glandular, glabrous or the upper part hirtellous with a lew- 

 scattered hairs on the ribs: pappus bristles subplumous. [n gravelly 

 gulches and along streams, southern Oregon and northern California. 



C. oMoug-ifolius O. Ktze 1. c Brichellia oblongifolia Nutt Slightly 

 viscidulous : stems herbaceous from a lignescent base 10-20 inches high : 

 leaves oblong or some upper ones lanceolate: involucral bracts all acute or 

 muricate pointed; outer ones oblong-lanceolate, inner ones narrowly-lin- 

 ear: achenes sprinkled with minute glands, often a few bristles on the ribs 

 near the summit. In gravelly or dry soil, British Columbia to eastern 

 Oregon. 



C. linifolius O. Ktze. 1 c. Brickeltia linifolia Eaton. Minutely 

 glandular-pubescent: stems very numerous, 12-16 inches high From a 

 stout, woody base, cymose at the summit: leaves numerous, alternate 

 sessile, elliptical-lanceolate, entire, obscurely 3-nerved, 9-12 lines long, 



