108 COMPOSITE. BricMlia. 



Proc. Am. Acad. i. 46, PI. Liudli. ii. 218, PI. Wright. 1. c — Hillsides aud thickets, Texas, 

 Bedandier, Wriijht, Lindheimer, &c. Varies into 



Var. laxa, Gray. Paniculately 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- Leaves alternate, veinj': stems herbaceous from a perennial root: pappus barbellate. 



B. Riddellii, Gray. Minutely cinereous or puberulent, glaljrate : 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. Claviyera deulata, DC. 

 Prodr. V. 128, but the character does not well agree, and the specific name is inapprojjriate. 

 C. Riddellii, Torr. & Gray, El. ii. 77. — River banks, middle aud southern parts of Texas, 

 Errldndier, Riddtll, Wright, Lindheimer, &c. 



B. brachyphylla, 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, 9-1 2-flowered: 

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

 almost plumose under a lens. — PI. Wright, i. 84. Clwigera hracliyphyUa, Gray, PI. Feudl. 

 63. — Rocks aud ravines, western border of Texas, New Mexico, aud Arizona, FendLer, 

 Bigeloiv, Greene, Lemmon, &c. 



++++++ Leaves mostly nervose and narrow, entire, the lower opposite: stems paniculately much 

 branched: heads very numerous, thyrsoid-paniculate: akenes 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 year bearing narrowly linear (2 or 3 inches long, less than 2 lines wide) obscurely 

 3-nerved deciduous leaves ; flowering shoots the next 3'ear bearing only minute scjuamiform 

 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 10-1 2-flowered, turbinate, about 5 lines 

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

 externally somewhat canescent ; 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, Lemmon. (San Luis Potosi, Mex.) 



B. longifolia, 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, 3-5Howered, 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. 

 ThoiDjisd)!, Pdlmer. 



B. multiflora, Kellogg. SufTruticose : 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. loiigijhlia. — Kellogg in Proc. Calif. Acad. vii. 49; Greene, Bull. 

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

 California, Kellogg. 



++++++++ 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 branclilets, about 20-tlowered : involucriil liracts rather 

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

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

 ders of California, Sutton Haijes, Palmer, G. R. Vasei/, Parish. 



