614 ADDITIONS AND CORRECTIONS. 



long) cuneate-obovate, entire, mostly retuse, thick-coriaceous, veinless and with mid- 

 rib indistinct, obscurely if at all punctate : heads in small corymbose terminal clus- 

 ters, 4 or 5 lines long, about 1 6-flowered : scales of the turbinate involucre numer- 

 ous and regularly imbricated ; all of the inner ones broadly linear, coriaceous, 

 rather obtuse, destitute of green tips ; the outer "shorter, greenish, and gradually 

 passing into roundish rigid scale-like bractlets : appendages of the style-branches 

 slender-subulate, as long as the stigmatic portion and narrower : akenes silky-hairy. 

 Proc. Am. Acad. xi. 74. 



Tantillas Mountains, near the entrance of the Great Canon, below the southern boundary of 

 the State, Palmer. Too closely resembles Aplopappus cuneatus, p. 312 ; but not balsamic-resin- 

 ous ; leaves almost dotless ; heads smaller, fewer-flowered, and rayless ; akene shorter and with 

 silky pubescence, and slender bristles of the pappus not thickened toward the tips. 



2. B. arborescens, Gray. Foot-hills of the Sierra Nevada in Calaveras Co., 

 Lemmon, 1875. 



3 a . B. brachylepis, Gray. Resembles B. Cooperi : heads larger and broader, 

 4 or 5 lines long, 8 - 12-flowered, corymbose or thyrsoid, or terminating short-leaved 

 branchlets : scales of the campanulate involucre all obtuse, many with resinous- 

 glandular thickened midrib, the innermost not exceeding the linear akenes : style- 

 appendages slender-subulate, obtusish. 



Larkens' Station, 80 miles east by north of San Diego, Dr. Palmer. Shrub 4 to 6 feet high, 

 fastigiately branched. Also resembles B. teretifolia in foliage and in traces of glands to the invo- 

 lucre. 



8. B. paniculata, Gray. San Bernardino County, Parry. Also Southern 

 Utah, Palmer. 



9. B. graveolens, Gray, has been found as far west as Kern Co., Rothrock. 



10. B. Douglasii, Gray. To the varieties must be added a most distinct and 

 remarkable one, 



Var. stenophylla, Gray. Leaves all from very narrowly linear to filiform, 

 smooth: heads narrower, oftener only 4-flowered. 



N. "W. Nevada ( Watson, Lemnwn, &c.) to borders of Lower California, Palmer. Perhaps a 

 distinct species. 



Page 324. 21. ASTER. 



1 O a . A. aestivus, Ait. (?) Minutely pubescent or nearly glabrous : leaves nar- 

 rower and heads more paniculate than in A. Douglasii : scales of the involucre 

 narrower, the outer all linear, mainly green. A. laxifoliiis, Nees. A. Douglasii, 

 DC. in part. 



Moist grounds, mountains of San Diego Co. (Cleveland) ; Southern Sierra Nevada, Tulare Co., 

 &c., Rothrock. Not uncommon far eastward and northward. 



1 6. A. spinosus, Benth. Glabrous, 2 or 3 feet high, with slender virgate or 

 rush-like branches, terminated by single naked heads, bearing also some soft-spines- 

 cent branchlets below : leaves small and linear, or reduced to minute subulate scales, 

 at length deciduous : heads 3 lines long : scales of the involucre subulate : rays 

 rather short, whitish : akenes glabrous. PI. Hartw. 20 ; Torr. & Gray, Fl. ii. 165. 



Interior of San Diego Co. , Palmer. Extends through Arizona to Texas and into Mexico. 



Page 333. 25. BACCHARIS. 



8. B. brachyphylla, Gray. Minutely roughish-puberulent : slender and diffuse 

 branches 2 or 3 feet long from a woody base, beset with small linear or lanceolate 

 subulate leaves (the lower half an inch long, the upper reduced to scale-like bracts 

 less than a line long), bearing loosely paniculate heads : involucre 2 lines high ; the 



