224 COMPOSITE. Baccharis. 



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

 ii. 83. — Rocky ground, S. Arizona to San Bernardino Co., California, Wright, Palmer, 

 Parry. 

 B. Plummerse, Gray. Loosely pubescent, moderately branched : leaves linear-oblong, ob- 

 tuse, irregularly and acutely serrate, the larger an inch or two long, obscurely 3-nerved : 

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

 obscurely 5-nerved : pappus in fruit 4 lines long. — Proc. Am. Acad. xv. 48, & Bot. Calif, 

 ii. 456. — S. W. California, in mountain ravines behind Santa Barbara and Santa Monica, 

 Miss Plummer, Parish, &c. 



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

 passing the style. 



H— Bracts of the 15-30-flowered involucre from oblong to linear, rather firm and with green centre 

 or costa: receptacle flat: leaves comparatively small and rather rigid, serrate with rigid or 

 spinulose teeth. 



B. thesioid.es, HBK. 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 sessile, 

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

 long), prominently 1-nerved, sometimes with obscure lateral nerves : heads 2 lines long, nu- 

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

 if at all thickened upward. — Nov. Gen. & Spec. iv. 61 ; DC. Prodr. v. 419. B. ptarmiccefolia, 

 DC. 1. c. B. ptarmiccefolia ? or thesioides, Gray, PI. Wright, ii. 83. — S. Arizona, Wright, 

 Lemmon. (Mex.) 



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

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

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

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

 and shaded hillsides, in Arizona and New Mexico, Biyelow, Wright, Thurber, Lemmon, Rusby. 

 (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 narrowly linear, 2-3-toothed 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, Havard. 



+- 4— Bracts of the involucre narrow!}' oblong or linear-lanceolate, thin and pale with greenish 

 centre : heads short and broad, many-flowered : receptacle hemispherical or broadly conical! 



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

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

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

 long) or the upper lanceolate, with attenuate-acute apex, the base contracted into a short 

 margined petiole : heads numerous and densely cymose at the summit of naked branchlets, 

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

 somewhat clavellate and barbellate above. — Torr. & Gray, El. ii. 259, excl. syn. Nutt., &c. ; 

 Gray, Bot. Calif, i. 333. B. Douglasii & B. Hcenkei, DC. 1. c. 400 & 401, the latter from Mon- 

 terey in California. B. glutinosa, Hook. & Arn. Bot. Beech. 147 ? — Moist or wet 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 tawnj-, destitute of green centre or distinct costa ; 

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

 up to the corj-mbosely paniculate or cymose inflorescence, more terete than in the preceding 

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

 subsessile. 



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

 branches somewhat striate-angled : leaves elongated-lanceolate, serrate with few or several 

 scattered teeth on each side, more or less distinctly 3-nerved from near the base (3 or 4 and 

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

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



