108 COMPOSITE. BricMlia. 



Proc. Am. Acad. i. 46, PI. Lindh. ii. 218, PI. Wright. 1. c. Hillsides and thickets, Texas, 

 Berlandier, Wright, Lindheimer, &c. Varies into 



Var. laxa, GRAY. Pauiculately branched, and the branches bearing numerous smaller 

 (5 or 6 lines long) loosely disposed and sometimes slender-ped uncled heads, having fewer 

 bracts to the involucre: leaves of the branches either subsessile or abruptly petioled. Proc. 

 Am. Acad. xvii. 207. S. W. Texas, Palmer. 



H- -w- Leaves alternate, veiny: stems herbaceous from a perennial root: pappus barbellate. 



B. Riddellii, GRAY. Minutely cinereous or puberulent, glabrate : stem strict and stout, 2 to 

 4 feet high, simple or fastigiately branched above, exceedingly leafy to the summit : leaves 

 oblong-lanceolate, rather acute, sparingly denticulate, occasionally more dentate, often 

 entire, thickish, obscurely veiny, 8 to 18 lines long: heads subsessile, numerous, crowded 

 in a leafy spiciform thyrsus, 15-20-flovvered, 4 or 5 lines long: involucre campanulate, some- 

 what pubescent ; the bracts few-striate, obtuse or mucronate ; the outer ovate, inner oblong- 

 lanceolate : pappus barbellulate under a lens. PI. Wright, i. 83. Claviijcra dentata, DC. 

 Prodr. v. 128, but the character does not well agree, and the specific name is inappropriate. 

 C. Rlddellii, Torr. & Gray, Fl. ii. 77. River banks, middle and southern parts of Texas, 

 Berlandier, RiddM, Wright, Lindheimer, &c. 



B. brachyph^lla, GRAY. Minutely puberulent : stems a foot or two high from a lignes- 

 cent caudex, slender, simple, and bearing a few racemosely paniculate slender-pedunculate 

 heads, or paniculately branched and polycephalous : leaves oblong-lanceolate, entire or 

 sparingly serrate, half-inch or the larger an inch long : heads 5 lines long, 9-12-flowered : 

 involucral bracts few, acute, short outermost ovate or oblong, inner linear : pappus-bristles 

 almost plumose under a lens. PI. Wright, i. 84. Clavigera brachyphylla, Gray, PI. Fendl. 

 63. Rocks and ravines, western border of Texas, New Mexico, and Arizona, Fendier, 

 Biyelow, Greene, Lemmon, &c. 



M- -H- -H- Leaves mostly nervose and narrow, entire, the lower opposite: stems paniculately much 

 branched: heads very numerous, thyrsoid-paniculate : akeues usually glabrous: pappus merely 

 scabrous : plants nearly glabrous. (B. spinulosa, Gray, of Mexico, is of this group.) 



B. squamulosa, GRAY. Suffrutescent at base, 2 or 3 feet high: stems or shoots of the 

 first 3'ear bearing narrowly linear (2 or 3 inches long, less than 2 lines wide) obscurely 

 3-nerved deciduous leaves ; flowering shoots the next year bearing only minute squamiform 

 obtuse leaves of a line or less .in length, and closely imbricated on short branchlets and 

 thence passing into the bracts of the involucre : heads 10-12-flowered, turbinate, about 5 lines 

 long : involucral bracts pluriseriate, thickish, obscurely nerved, green with whitish margins, 

 externally somewhat cauescent ; the short outer ones ovate or oblong and obtuse, inner 

 narrow and acutish. Proc. Am. Acad. xv. 30. New Mexico near Santa Rita del Cobre, 

 Greene. S. Arizona, near Fort Huachuca, Lcmmon. (San Luis Potosi, Mex.) 



B. longifdlia, WATSON. Suffruticose : flowering branches leafy: leaves lanceolate-linear 

 (1 to 3 inches long, 2 or 3 lines wide), 3-nerved; upper gradually diminished in the open- 

 paniculate leafy thyrsus : heads subsessile in small clusters, 3-5-flowered, only 3 lines long : 

 bracts of the involucre about 10, of 2 or 3 lengths, conspicuously striate, obtuse. Am. 

 Nat. vii. 301 ; Rothr. in Wheeler Rep. vi. 139, t. 5. S. Utah and S. Nevada, Wheeler, Mrs. 

 Thompson, Palmer. 



B. multiflora, KELLOGG. Suffruticose: cauline leaves ovate-lanceolate and with divergent 

 lateral nerves, an inch or two long ; those in the crowded panicle from lanceolate to linear, 

 small, and with obscure lateral nerves : heads 3-5-flowered : akenes sparsely hairy : other- 

 wise much resembling B. lonyifolia. Kellogg in Proc. Calif. Acad. vii. 49; Greene, Bull. 

 Calif. Acad. i. 8. On rocks, in a canon of King's River, southern part of the Sierra Nevada, 

 California, Kellogg. 



H- -H- -H- -H- Leaves all alternate, spatulate, veinless: steins shrubby: heads sparse or solitary. 



B. frutescens, GRAY. Rigid undershrub with divaricate branches, cinerous-pubescent : 

 leaves spatulate or obovate, entire, 3 to 5 lines long, including the attenuate petiole-like base : 

 heads (half-inch long) terminating the brnnchlets, about 20-flowered : iuvolucral bracts rather 

 obtuse; outer ones somewhat greenish-tipped: akenes hispidulous-scabrous : bristles of the 

 pappus very minutely but densely serrulate. Proc. Am. Acad. xvii. 207. Southern bor- 

 ders of California, button Hayes, Palmer, G. R. Vasey, Parish. 



