486 COMPOSITAE (COMPOSITE FAMILY) 



woody caudex; stems numerous, 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 linear, with 

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

 shining resinous particles as are also the corolla-teeth: disk 10-12 mm. high, 

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

 achene linear, finely about 20-striate, only a little shorter than the white, finely 

 plumose pappus. [K. rosmarinifolia 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 or 

 becoming paniculate: involucre turbinate-campanulate ; 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 Ell. 



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, lanceolate or linear, the exterior shorter, 

 none herbaceous. Receptacle flat, naked. Corolla slender, 5-toothed at sum- 

 mit, the teeth mostly glandular externally. Pappus a single series of bar- 

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

 10-striate. (Coleosanthus Cass.) 



Leaves ovate or cordate-triangular. 



Leaves petioled, teeth not spine-tipped. 

 Heads 30-50-flowered. 



Heads more or less umbellately crowded, drooping 1. B. grandiflora. 



Heads cymosely paniculate, erect 

 Heads 10-25-flowered. 



Leaves 20-40 mm. long; involucral bracts erect 

 Leaves 5-10 mm. long; involucral bracts squarrose 



Leaves subsessile; teeth spine-tipped 

 Leaves oblong to linear, sessile . 



2. B. ambigens. 



3. B. Wrightii. 



4. B. microphylla. 



5. B. atractyloides. 



6. B. linifolia. 



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

 berulent or almost 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 var. petiolaris Gray; Coleosanthus petiolaris Greene, Bull. 

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

 and Washington. 



la. Brickellia grandiflora minor Gray, Proc. Acad. Phila. 67. 1863. Plant 

 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 (Coleosanthus) umbellatus (Greene), 

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

 more frequent form in our range. 



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

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

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



