COMPOSITAE (composite FAMILY) 487 



a lens: lowest, leaves opposite, the pairs remote, very thin, deltoid-ovate, 

 5-8 cm. long, acute, coarsely serrate-toothed; the upper and those subtend- 

 ing the branches of the panicle alternate, all with slender and rather long 

 petioles: involucres 6-7 mm. high, strongly imbricated; the bracts ovate to 

 oblong-linear, obtuse, strongly nerved aild tomentose-ciliate: flower^ ochro- 

 leucous: achenes with 5 prominent angles and as many intervening ribs, not 

 glandular, the angles and ribs scabro-serrulate. {Coleosanthus ambigens 

 Greene, Bull. Torr. Bot: Club 25: 118. 1898; C. Garrettii A. Nels. Proc. Biol. 

 Soc. Wash. 20: 38. 1907.)— New Mexico, Colorado, arid Utah. 



3. Brickellia Wrightii Gray, PI. Wright. 2: ,72. 1853. Usually much 

 branched from a woody base, 3-10 dm. high, puberulent, sometimes a little 

 scabrous: leaves broadly deltoid-ovate, or rounded-cordate and obtuse, or 

 at most acute (but not prolonged upward), more or less crenate-dentate 

 (larger cauline 3-4 cm. long, smaller Orily 1 cm.): heads glomerate-paniculate, 

 the clusters shorter than or little surpassing the subtending leaves: involucre 

 often purple, turbinate, ■10-20-flowered; bracts either obtuse or acute, the 

 outer short'^ovate, the' inner linear: corolla ochroleucous: pappus white. 

 [Brickellia (Coleosanthus) albicaulis (Kydh.), Bull. Torr. Bot. Club 31: 646. 

 I904.]^-Colorad'b and Utah to Texas and Arizona. 



4. Brickellia microphylla Gray, PI. Wright. 1: 85. 1852. Glandular- 

 puberulent or pubescent and viscid, 3-5 din. high, from a pa^rtly woody base, 



Eaniculately much branched; the short leafy branchlets terminated by 1-3 

 eads: leaves subcordate or ovate to oblong, when old somewhat scabrous, 

 obtuse orapiculate, sparingly denticulate or nearly entire, the larger 10-14 

 mm. long,' those of flowering branchlets 2-5 mm. long: heads 10-12 mm. long, 

 about 15-flowered; involucral bracts firm, the outer with green and spreading 

 tips, the lowest herbaceous and passing into the leaves of the branchlets. 

 [Brickellia (Coleosanthus) scaber (Greene), Pitt. 3: 100; 1906.] — From Col- 

 orado and Wyoming to Oregon. 



5. Bi;ipkeillia atractyloides Gray, Proc. Am. Acad. 8: 290. 1870. Stems 1-3 

 dm. high, woody except the new shoots, much branched: leaves ovate-acumi- 

 nate, green, minutely scabrOus-atomiferous, 3-nerved,and>eticulate-veined, 1-3 

 cm. long:, branchlets terminating in a solitary and slender-pedunculate head: 

 involucre campanulate; the bracts firm-chartaceous; outer ovate, acuminate, 

 little shorterthan the linear-lanceolate innermost, 10-13 mm. nigh, 35-50- 

 floVered. (Coleosanthus venulosus A. Nels. Bot. Gaz. 37: 262. 1904.) — ^Arid 

 areas; Colorado'to California. ' 



6. Brickellialinifolia'Eaton, Bot.King'sExp. 137. 1871. Miiiutely gland ular7 

 puberulent; stems 1-several, 2-4 dm. high from a woody rootstock, simple 

 or corymbose at the Summit: leaves numerous, alternate, sessile, elliptical- 

 lanceolate to linear, entire, obscurely 3-rierved, 2-3 cm. long: heads large, 1 or 

 more on elongated somewhat leafy branches: involucre 40-50-flowered, the 

 scales in several series, outer ones ovate, inner ones linear, acute: branches of 

 the style club-shaped, exserted: achenes with a double, row of minute bristles 

 along the striae; pappus obscurely plumose. [Brickellia (Coleosanthus) humilis 

 (Greene), Pitt. 4: 124. 1900.]-r-Sandy banks; Colorado to the Sierra NeVada. 



5. LIATRIS Schreb. Blazing Stab 



: Erect perennial herbs, usually from a globular tuber, simple or little 

 branched, with alternate, entire, 1-5-nerved lea^weSj and spicate or racemose 

 discoid' heads of rose-purple flowers. Involucre oblong, ovoid, or subhemi- 

 spheric, the bracts imbricated in several; series, the outer shorter. Receptacle 

 flat or slightly convex, naked. Corolla regular, the tube slender, the limb 

 5-lobed or 5-cleft. Style branches elongated, obtuse or flattened at the apex. 

 Achenes 10-ribbed, slender, tapering to the Isase. Pappus of 1 or 2 series of 

 slender, barbellate or plumose bristles. — (Laciniaria Hill.) 



Heads 4-6-flowered; pappus plumose . . . , , . . 1. L. punctata, 

 fl^ads 50-70-flowerei;' pappus minutely barbellate .... 2. L. ligulislylis. 



