222 COMPOSITiE. Baccharis. 



B. Wrightii, Gray. Very smooth and glabrous, a foot or two high, diffusely branching, 

 sparsely leaved: slender branches terminated by solitary heads: leaves small; uppermost 

 linear-subulate : involucre campanulate, 4 or 5 lines high ; its bracts lanceolate, gradually 

 acuminate, conspicuously scarious-margined, with a green back : pappus fulvous or some- 

 times purplish, four times the length of the scabrous-glandular 8-10-nerved akene. — PI. 

 Wrio-ht. i. 101, & ii. 83. — W. Texas to S. Colorado and Arizona. (Adj. Mex.) 



B, Texana, Gray. Glabrous, a foot or more high, with many nearly simple rigid stems 

 from a woody base, leafy to the top, where it bears a few somewhat eorymbosely disposed 

 heads : leaves an inch or two long, rather rigid : involucre 3 lines long, of firmer and nar- 

 rower merely acute bracts : akenes smoother. --F1. Fendl. 75, & PI. Wright. 1. c. Linosp-is 

 Texana, Torr. & Grav, Fl. ii. 232, male plant. Aplopappus llneurl/olius, Buckley in Proc. 

 Acad. Philad. 1861, 457. — Texas, forming large patches in dry prairies, Berlundier, Drum- 

 mond, Wright, &c. 



§ 2. Pappus of the fertile flowers more or less copious, but uniserkl or nearly 



so, conspicuously elongating in fruiting, soft and fine, mostly flaccid and bright 



white: akenes 10-nerved: branching shrubs, glabrous or nearly so, usually 



viscous with a resinous exudation : leaves sometimes lobed or angulate-dentate : 



heads glomerate or paniculate : receptacle naked and flat. 



* Eastern species, of the coast or aloni;- streams in subsaline soil: shrubs 3 to 12 feet high. 



B. halimifolia, L. Cauline leaves from dilated-obovate to oblong with cuneate liase, attenu- 

 ate into a petiole, laciniately or angulately 3-9-toothed, those of the flowering branchlets be- 

 coming lanceolate and mostly entire : heads in pedunculate and paniculate glomernles (3 to 5 

 together) : involucre of the male heads only 2 lines long, of oblong-ovate obtuse bracts; of 

 the female rather longer and narrower, the inner bracts linear-lanceolate and acute. — Spec. 

 ii. 860 ; Michx. Fl. ii. 125 ; Duham. Arb. i t. 60. — Sea-coast, New England to Florida and 

 Texas.' (W. Ind.) 



B. glomeruliflora, Pers. Brighter green : leaves mo,stly cuneate-obovate or the upper- 

 most spatulate, less petioled or sessile, merely angulate-toothed : heads larger, sessile or in 

 very short-peduncled glomernles in the axils of the upper leaves : involucre of both sexes 

 campanulate, pluriserially imbricate, of obtuse bracts. — Syn. ii. 423; Pur.sh, Fl. ii. 523. 

 B. scssilijlora, Michx. Fl. ii. 125 ; Ell. Sk. ii. 320, not Vahl. — Swamps near the coast, N. Caro- 

 lina to Florida. (Bermuda.) 



B. salicina, Torr. & Gray. Leaves mostly subsessile, from oblong to linear-lanceolate, 

 sparingly toothed, rarely entire : heads or glomernles pedunculate : involucre of both sexes 

 campanulate (nearly 3 lines long), of mainly ovate and acuti.sh bracts. — Fl. ii. 258. B. siili- 

 ci folia, Nutt. Trans. Am. Phil. Soc. vii. 337. — Colorado (banks of the Arkansas, &c.) to 

 W. Texas, on the Rio Grande, near El Paso. 



B. angustifolia, Miciix. Rather strict: leaves narrowly-linear (larger 2 or 3 inches long, 

 a line or two wide), entire or with few denticulations ; and some lower ones broadly lanceo- 

 late and more serrate : heads or glomernles short-pedunculate, amply paniculate : involucre 

 2 lines long, of oblong-ovate or lanceolate bracts, the outer obtuse, innermost acute. — Fl. 

 ii. 125; Ell. 1. c. ; Torr. & Gray, 1. c. B. salicin/i. Gray, PI. Wright, i. 101, not of ii., nor 

 Nutt. — Brackish marshes, &c., S. Carolina to Florida, and to Texas on the Rio Grande; also 

 S. Arizona, Lemmoii. (Adj. Mex.) 



* * Western species (Pacific coast to Arizona) : branches smooth or nearly so, striate-angled. 



B. pilularis, DC. Either depressed, spreading on the ground, or more erect and sometimes 

 4 feet high, leafy up to the glomerate sessile heads: leaves short (.seldom over inch long), 

 obovate and cuneate or roundish, very obtuse, sessile, coarsely few-toothed or some entire : 

 involucre nearly hemispherical, 2 lines long; its iiracts oval and olilong, all but t'le inner- 

 most very obtuse : flowers bright white : fertile pappus not over 4 lines long. — B. pilularis 

 & B. consanrjninea, DC. Prodr. v. 407, 408; Torr. & Gray, Fl. ii 259 ; Benth. Bot. S'ulph. 25. 

 B. r/lomerulijiorn, Less, in Linn. vi. 506; Hook. & Am. Bot. Beech. 147. — Near the coast, 

 Monterey, California, to Oregon. 



B. Emoryi, Gray. Erect, with slender In-anches, 2 to 15 feet high: cauline leaves mostly 

 oblong or tlie lower broader, with attenuate or cuneate base and the larger somewhat 



