224 COMPOSIT.E. Baccharis. 



involucre of oblong-lanceolate or broader bracts : pappus in fruit 3 lines long. — PI. Wright, 

 ii. 83. — Eocky ground, 8. Arizona to San Bernardino Co., California, Wrvjht, Palmer, 

 Parry. 

 B. Plummerae, Gray. Loosely pubescent, moderately branched : leaves linear-olilong, ob- 

 tuse, irregularly and acutely serrate, the largeaan inch or two long, oliscurely 3-nerved; 

 heads 4 lines long : involucre of linear bracts : akfnes somewhat compressed and puberulent, 

 obscurely 5-uerved : pappus in fruit 4 lines long. — I'roc. Am. Acad. xv. 48, & Bot. Calif. 

 ii. 456. — S. \V. California, in mountain ravines Tiehind Santa Barbara and Santa Jlonica, 

 J7/.V.S' Phimmer, Parish, &c. 



* * Glabrous or nearly so and smooth, sometimes glutinous : pappus in fruit slightly if at all sur- 

 passing the style. 



-I— Biacts of the 15— 30-flowered involucre from oblong to linear, ratlier firm and with green centre 

 or costa : receptacle flat : leaves comparatively smiill and ratlier rigid, serrate with rigid or 

 spinulose teeth. 



B. thesioides, IIBK. A foot or two high from a woody base: branches rigid and slender: 

 leaves linear-lanceolate or sometimes broader and narrowed to base, nearly or quite se.-isile, 

 rather closely and evenly ciliately spinulose-serrate (the larger an inch or rarely 2 inches 

 long), prominently 1-nerved, sometimes with obscure lateral nerves : hearts 2 line.< long, nu- 

 merous in a corymbiform or an oblong naked panicle : pappus of the male flowers obscurely 

 if at all thickened ujiward. — Nov. Gen. & Spec. iv. 61 ; DC. Prodr. v. 41 9. B. ptanniciefolia, 

 DC. 1. c. B. ptarmicai/olia 1 or thesioides, Gray, PI. Wright, ii. 83. — S. Arizona, Wright, 

 Lemmon. (Jlex.) 



B. Bigelovii, Gray. Stems more copiously and loosely branched : leaves less rigid, from 

 linear to oblong and the broader ones sometimes petioled, irregularly serrate, commonly 

 obtuse : hearts larger, more cymose : bristles of the male pappus thickened and barbellate 

 at the tip. — Bot. Mex. Bound. 84. B. ptarmica'fulia? Gray, PI. Wright, ii. 83. — Woods 

 and shaded hillsirtes, iu Arizona and New Mexico, Biijelow, Wright, Thurber, Lemmon, Rushy. 

 (Adj. Mex.) 



B. Havardi. Stems copiously branched, slender : leaves hardly at all rigid ; lower linear- 

 oblanceolate and tapering into a slender petiole, laciniate-pinnatifid into several irregular 

 slender-subulate lobes ; those of the branchlets narron ly linear, 2-3-tootlied or entire : heads 

 loosely paniculate, only the male known, these barely 2 lines high, about 15-flowered : involu- 

 cral bracts oblong: bristles of the pappus rigid, clavellate. — Guadelupe Mountains, western 

 borders of Texas, Jlncard. 



-I— -I— Bracts of the involucre narrowly oblong or linear-lanceolate, thin and pale with greenish 

 centre : heads short and bi'oad, many-flowered : receptacle hemispherical or broadly conical! 



.B. Douglasii, DC. Herbaceous nearly or cpiite to the ground, 3 to 5 feet high, loosely 

 branched: leaves glutinous, not rigid, either entire or serrulate with minute and verv acute 

 denticulations, triplinerved from near the base, ovate-lanceolate (the larger 4 to 6 inclies 

 long) or the upper lancenlate, with attenuate-acute apex, the base ontracted into a short 

 maigined petiole : heads numerous and densely cymose at the summit of naked branclilets, 

 3 lines long: involucral bracts erose-ciliate : female pappus barely 2 lines long, soft: male 

 somewhat clavellate :rnd barbellate above. — Torr. & (iray, Fl. ii. 259, excl. syn. Xutt., &c. ; 

 Gray, Bot. Calif, i. 333. B. Douglasii & B. IhenJcei, DC. I.e. 400 & 401, the latter from Mon- 

 terey in California. B. glutinosa. Hook. & Am. Bot. Bcch. 147 ? — Hoist or wot ground, 

 California, from San Francisco southward, and southeastward to San Bernardino. 



•t- -)— -I— Bracts of the involucre broader, thin-chartaceous, rather dry, with narrow scarious 

 margins, at least the inner ones yellowish or tawny, destitute of ;,'reen 'centre or distinct costa; 

 the outer bracts ovate, inner oblong: heads many-flowered: recc|itacle flat: stems very leafy 

 up to the corymboscly paniculate or cymose infloresccnic, mora terute than in the prooivling 

 species : leaves lanceolate, willow-like, acute at both ends, either denticulatL--serrate or entire, 

 subsessile. 



B. glutinosa, Pers. Stems herbaceous above but woody toward the b:tse, 3 to 10 feet high : 

 branches somewhat striate-ixngled : leaves elnngatcd-lancoulate, serrate with few or several 

 scattered teeth on each side, moi-e or less distinctly 3-ner\ed from iie:ir the base (3 or 4 and 

 the larger 5 or 6 inches long) : he;ids mostly 3 lines long or the male smaller, numerous and 

 corymbosely cymose at the summit of comparatively simple stems or branches : iuvolucre 



