292 COMPOSITjE. coLEOSANTHca. 



indrical or campamilate ; 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 

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

 the style mostly exserted and elongated cylindraceous or some- 

 what flattened, obtuse. Achenes 5-angled, u ithout intermediate 

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



E. occidentale Hook Kl. i, 303 Nearly glabrous : steins slender, 8-12 

 inches high, somewhat ■wo< dy 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 ratJier compact, usually paniculate ; heajis 15-25-flowered : scales of 

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

 hardlv 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. 

 BRICKKLLIA Ell. Sk. n. ^90. 



Herbs or undershrubs with opposite or alternate leaves and 

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

 summer. Scales of the cumpanulate involucre imbricated lan- 

 ceolate or linear, the exterior sliorter. none herbaceous, Recep- 

 tacle flat, naked. ( orolla slender, 6-1oothed at summit, the 'teeth 

 mostly glandular eNteinnlly. Pappus a single series of barbel- 

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

 tate or 10-striate. 



* Heads 35-.iO-Hovvered, e-9 lines high, pappus bristles merely sca- 

 brous or densely serrulate. 



H- Pubet^ci'Ut to almost glalirous: leaves sessile or subsessile all 

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

 neous base, Iii-IH inches high or more, leafy to the top: heads mostly 

 single, terminating corymbose, leafy branches. 



C. Greeaei Ktze. Rev Gen i, 3iS Brickellia Greenei Gray Very 

 viscid-pubescent; stems slender, 1(1-16 inches high, numerous from a 

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

 obtuse, sonaewhat 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 few- 

 ecattered hairs on the ribs: pappus bristles subplumous. In gravelly 

 gulches and along streams, southern Oregon and noHhern California. 



_C._ oblougifollns O. Ktze, 1. c. BrickeUia (Moncjifolin Nutt Slightly 

 viscidulous: stems herbaceous from a lignescent base 10-2 i inches high: 

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

 muricate pointed ; outer ones oblong-lanceoiate, inner ones narrov/lv-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. linlfolins O. Ktze. 1 c. BrickeUia linifoUa 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 loiig, 



