OP ARTS AND SCIENCES. 211 



quite in tlie manner of Gnaphalium, and the short outer pappus is 

 very conspicuous. 



Uacciiaris sarothroides. B. Emoryi affinis, scoparia, micro- 

 phylla; foliis linearibus iutegerrirais, ramulinis miuimis ; capitulis laxe 

 pauiculatis miiioribus paucifloris ; pappi fl. masc. setis apice nudis, 

 fl. foem. dcmuui liu. 3 longis. — Southern borders of California, San 

 Diego Co., near the old Mission station, the boundary monument, &c., 

 Sutton Hayes, Palmer. This is one of the species with soft elongating 

 pappus in fruit, which has been somewhat confounded with B. Emoryi, 

 and also with B. sergiloides, which belongs to another section.* 



* The North American species of Baccharis I now understand in this wise, 

 arranging them in four groups. 



1. Pappus of the fertile flowers very copious, pluriserial, elongated in fruiting, 

 fine and rather soft : akcncs 8-10-costate : stems somewhat simple and Iiorba- 

 ceous above the woody base : leaves linear, 1-nervcd. — To this group belong 

 B. juncea of S. Brazil, of which I have not seen akenes, and B. Seenanni, Gray, 

 of Mexico, only that the latter appears to have 5-nerved akenes. 



B. Wrigutii, Gray, PI. Wright, i. 101, & ii. 83. W. Texas to S. Colorado and 



Arizona. 

 B. Texana, Gray, PI. Fendl. 75, & PI. Wright, 1. c. Texas. 



2. Pappus of the fertile flowers less copious, conspicuously elongating in 

 fruit, soft and fine, mostly flaccid and bright white : akenes 10-nerved. These 

 are brandling shrubs, with numerous glomcrulate or paniculate heads, the 

 leaves sometimes incisely lobed or angulate dentate, but not serrate. 



* Atlantic species. 



B. uALLMiFOLiA, L. Coast of Ncw England to Texas ; also in Cuba. 



B. GLOMERULiFOLiA, Pcrs. North Carolina to Florida near the coast; also 

 Bermuda. 



B. SALiciNA, Torr. & Gray. B. salicifoUa, Nutt. Colorado, east of the moun- 

 tains, to W. Texas. I have seen few specimens that belong to this species. 

 Its leaves are from oblong to linear-lanceolate, rarely entire ; heads or glome- 

 rules of two or three heads pedunculate ; involucre of both sexes campanu- 

 late (nearly .3 lines long), of mainly ovate and acutish bracts. 



B. AXGusTiFOLiA, jMiclix. Brackisli marshes, from S. Carolina and Florida 

 to Te.xas. 



* * Pacific species. 



B. piLCLARis, DC, including B. consanguinea, DC. Pacific coast from Mon- 

 terey to Oregon. 



C. rMORTi, Gray, Bot. Mex. Bound. 83. S. California from Los Angeles Co., 

 and through the interior country well into Arizona and the southern part of 

 Nevada and Utah. Originally described only from upper branches ; some 

 specimens of it have been referred to the preceding, others to B. salicina. 



