104 COMPOSIT.E. BrickelUa. 



reach Florida) is widely tropical American, and there is an anomalous species in 

 Brazil. — Sk. ii. 290; Benth. Bot. Sulph. 22; Gray, PI. Wright, i. 84, & Proc. 

 Am. Acad. xvii. 206; Benth. & Ilook. Gen. ii. 247. Coleosanthiis, Cass. Diet. 

 X. 36. Sosalesia, Llave & Lex.? Clavigera & Bulbostylis, DC. Prodr. v. 127, 

 138. 



B. hastAta, Benth., is a well-marked species of Lower California, described in Bot. Sulpli. 

 21. In tliat work the genus was first extended to its proper limits, but made to rest on the 

 bulbous base of tlie style (which is of little account) instead of tlie 10-costate akene. 



* Heads 35-50 flowered, large or middle-sized; pappus-bristles merely scabrous or densely serru- 

 late. 



4— Herbage white-tomentose : leaves rounded, pointless. 



B. ineana, Geat. a foot or two high, loosely branched from a suffrute.scent base; dense 

 and fine tomentum somewhat deciduous : leaves alternate, sessile, subcordate-rotund or 

 ovate, entire (less than inch long) : heads solitary terminating the brauchlets, inch high, 

 pedjinculate : involucre broadly campanulate, pluriserial ; its bracts firm-chartaceous ; short 

 outer ones ovate, inmost lanceolate-linear : akenes (5 lines long) cinereous-jiubeseent. — Proc. 

 Am. Acad. vii. 350, & Bot. Calif, i. 300. — S. E. California along the Mohave Eiver, Cooper, 

 Panij, Parish. 



-^r- -i— Puberulent to almost glabrous: leaves sessile or subsessile, all alternate, not cordate, 

 +H- Rigid-coriaceous, spinulose-pointed and toothed; fruticulose. 

 B. atraotyloides, Gray. A foot or less high, woody except the new shoots, much 

 branched : leaves ovate, acuminate, bright green, minutely scabrous-atomiferoUs, 3-nerved 

 and reticulate-veined (an inch or less long) : brauchlets terminating in a solitary (half-inch 

 long) and slender-pedunculate head: involucre campanulate; its bracts firm-chartaceous; 

 outer ovate, acuminate, little shorter than the linear-lanceolate innermost. — Proc. Am. 

 Acad. viii. 290. — Rocky ravines, St. George, S. Utah, Palmer, Parry. 



++ ++ Leaves not coriaceous, pointless, seldom an inch long, sometimes viscidulous: stems her- 

 baceous from a lignescent base or stock, a span to a, foot or so high, leafj' to the top: heads 

 mostly singly terminating corymbose leafy branches. 

 = Heads three fourths of an inch long, involucrately surrounded or subtended by small upper- 

 most leaves. 



B. G-reenei, Gr.AV. Very viscid: leaves ovate, obtuse, minutely more or less serrate, and 

 the lower short-petioled ; upper oblong and often entire, uppermost forming accessory loose 

 bracts to the involucre : proper involucral bracts lanceolate and linear, acuminate, glabrous : 

 akenes not glandular, glabrous, or at the upper part hirtellous with a few scattered short 

 bristles on the ribs.— Proc. Am. Acad. xii. 58. — N. E. California, on >Seott River, Greene. 

 = = Heads two-thirds or over half inch long, naked at base, commonly somewhat peduncled: 

 leaves entire, rarely with a tooth or two, obscurely 3-nerved, puberulent and minutely some- 

 what gi-acdular-granulose or atomiferous, graveolent, becoming sliglitly viscidulous. 



B. oblongifolia, Nutt. Leaves oblong or some upper ones lanceolate, obtuse or mucro- 

 nate : involucral bracts all acute or mucronate-poiuted ; outer and short ones oblong-lanceo- 

 late; inner narrowly linear; akenes sprinkled with minute sessile and stipitate glands, 



■ toward summit often a few bristles. — Trans. Am. Phil. Soc. 1. c. 288 : Torr. in Wilkes 

 Pacif. Exp. xvi, t. 9; Eaton, Bot. King Exp. 137. — In gravelly or dry soil, E. Oregon to 

 Bnt. Columbia, first coll. by Nutlall. 



Var. atabreviata, Gkay. Dwarf: leaves seldom half-inch long: involucral bracts 

 less acute: akenes minutely and sparsely glandular on the ribs, otherwise glabrous. — Eaton, ■ 

 1. c , t. 15, f. 7-10. — W. Humboldt fountains, Nevada, Watson. 



B.linifolia, Eaton. Rather more pubescent: le.aves oblong-lanceohxte to almost linear: 

 involucre of the preceding, or bra.-ts more attenuate-acute : akenes minuteh' hispid on the 

 ribs, not glandular. -Bot. King Exp. 137, t. 15, f, l-6.-Sundv banks of .streams, &c., 

 bierra IS eva(la,_ Crdif ornia, to Utah and bordcr.s of Arizona; first coll. by Walson. 



B. Mohavensis. Low, more cinereous-pubescent, bracliiatelv branched: leaves narrowlv 

 oblong; bracts of the involucre obtuse, rather bron.lly linear, outermo.st oldong; akenes 

 cmereous-hispululous; pappus-bristles approacliing barbeUulate.-Rockv washes in the 

 Mohave Desert, ,S. E. California, Parish. 



