486 COMPOSITAE (composite family) 



woody caudex; steins nvimerous, erect or spreading, 5-8 dm. high: leaves 

 numerous, sparsely and minutely puberulent' especially on the margins and 

 veins, linear to narrowly lanceolate, 2-4 cm. long, entire or nearly so, more 

 or less revolute-margined: inflorescence loosely and widely paniculate; the 

 pedicels and involucre finely pubescent: involucres turbinate; the bracts in 

 about 5 series; the outer bracts lanceolate; the inner broadly lineaf, with 

 villous-pubescent setaceous tip, about 4-striate, sparsely Sprinkled with 

 shining resinous particles as are also the cprblla-tefeth: disk 10-12 mm; high, 

 15-25-flowered; corolla oohroleucous or shading to brown, slender-tubular: 

 achene linear, finely about 20-striate, only a little shorter than theWhite, fibely 

 plumose pappus. [K. rosmarinijolia Vent, {K. leptophylla) probably, as to 

 our range.]^From northern Colorado to New Mexico and Utah. 



4. Kuhnia reticulata A. Nels. 1. c. 403. Stems several or many, ascending, 

 3-4 dm. high, simple, light green, finely puberulent: leaves light green, gla- 

 brate, closely impressed-punctate, ovate or oblong-lanceolate, 2-4 cm. long, 

 subacute, entire to irregularly few-toothed; cymeS congested-corymbose br 

 becoming paniculate; involucre turbinate-campaniilate; the bracts in 4 or 

 5 series, softly pubescent, strongly nervose, resin-sprinkled, shorter than the 

 12-15 mm. high disk; the outer lanceolate; the inner broadly linear,' acute: 

 flowers about 25: 'style-tips compressed, linear: achenes 20-striate, linear, 

 about 5 mm. long, exceeded by the white, softly plumose pappus. — Eastern 

 Wyoming. 



4. BRICKELLIA EU. 



Herbs or undershrubs with opposite or alternate leaves and variously 

 disposed heads of white or fle?h-colored flpwers inflate summer. Scales of the 

 campanulate involucre imbricated, lanceolate or linear, the exterior shorter, 

 none herbaceqi;?. Receptaele.flat, naked. Corolla slender, 5-toothed at sum- 

 mit, the teetli inostly glandular externally. Pappus a single series of bar- 

 bellate or subplumose or merely scabrous , bristles. Achenes 10-costate or 

 10-striate. — ((JoZeosaniAiw Cass.) ,,,■ ., 



Leaves ovate or cordate-triangular. \ 



Leaves petioled, teeth not spine-tipped. 



Heads 30-50-flowered. _ , , , 



Heads more or less umbelta-tely crowded, drooping . . . 1. B. grandiflora. 



Heads cymosely paniculate, erect 2. B. ambigens. 



Heads 10— 25-flowered. i 



,, Leaves 20-40 mm. "long; iDvolucral bracts erect . . . 3. B. Wrightii. 



Leaves 5-10 mm. long; mvolucral bracts squarrose . . . 4. B. miprophylla. 



Leaves subsessile; teeth spinertipped 5. B. atractyloldes^ 



Leaves oblong to linear, sessile . . 6. B. linifolia. 



1. Brickellia grandiflora Nutt. Trans. Am. Phil. Soc. 7: 287. 1841. Pu- 

 berulent oralmost glabrous; stem 3-8 dm. high, paniculately branched, the 

 numerous heads paniculate-cymose and drooping: leaves broadly or narrowly 

 deltoid-cordate, or the upper deltoid-lanceolate, coarsely dentate-serrate 

 and with an entire, gradually acuminate apex (the larger 6-10 cm. long): 

 involucre about 40-flowered ; the bracts papery and scarious-margined ' when 

 dried ; the short outer ones ovate; the inner linear, obtuse or acutish, or some ex- 

 terior ones with loose subulate acumination: pappus white, inclined to be de- 

 ciduous. (Includes van petiolaris Gray; Coleosanthus petiolaris Greene, Bull. 

 Torr. Bot. Club 25: 117. 1898.) — New 'Mexico to Montana and to Arizona 

 and Washington. ,it' - - ,.,;>' 



la. Brickellia grandiflora minor Gray, Proo. AcAd. Phila^ 67. 1863; 'Plknt 

 usually smaller: the leaves thickish and rugulose-veiny, from puberulent to 

 scabro-pubescent: pedicels mostly shorter than the heads, hence the latter 

 appearing crowded-congested. [Brickellia (Coleosanthiis) umbellatus (Greene), 

 Pitt. 4: 238. 1901; C. congestus A. Nels. Bot. Gaz. 31: 401. 1901.]— The 

 more frequent form in our range. i , 



2. Brickellia ambigens (Greene) A. Nels. Herbaceons, 4-7 dm. high, 

 simple up to the rather strict and thjrrsiform panicle of middle-sized heads; 

 foliage green and seemingly glabrous, but sparsely scabrd-puberulent under 



