672 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Branches smooth or nearly so, scabrous; leaves crowded or 



fasciculate; heads racemose or virgate 3. B. pteronioides. 



Branches striate-angled, glabrous; leaves not crowded; 

 heads paniculate or corymbose. 

 Leaves linear, entire, 25 mm. long or usually less; 



plants broomlike in general appearance 4. B. sarothroid.es. 



Leaves oblong to obovate, mostly toothed, usually 

 more than 30 mm. long; plants not broomlike. 

 Fertile heads hemispheric, 5 to 10 mm. broad. . . 5. B. salicina. 

 Fertile heads cylindric or long-campanulate, 3 to 



5 mm. broad 6. B. emoryi. 



1. Baccharis bigelovii A. Gray in Torr. U. S. & Mex. Bound. Bot. 84. 1859. 

 Type locality: "Puerto de Paysano," Sonora. 



Range: Southern Arizona and New Mexico to northern Mexico. 



New Mexico: Carpenter Creek; West Fork of the Gila. Transition Zone. 



2. Baccharis glutinosa Pers. Syn. PI. 2: 425. 1807. 

 Type locality: Chile. 



Range : Colorado to western Texas and California, south to Mexico, Central America, 

 and South America. 



New Mexico: Mangas Springs; North Percha Creek; Socorro; Bedrock; Deming; 

 Mesilla Valley; Organ Mountains; between Tularosa and Mescalero. River valleys 

 and wet ground, in the Lower Sonoran Zone. 



One of the most common shrubs of the river valleys, p referring land that is some- 

 times inundated. It becomes a meter high or even more. Along the banks of the 

 Rio Grande it covers large areas. 



3. Baccharis pteronioides DC. Prodr. 5: 410. 1836. 



Type locality: "In Mexico inter Tampico et Real del Monte." 

 Range: Southern New Mexico and Arizona to Mexico. 



New Mexico: Mangas Springs; Kingston; Dog Spring; Organ Mountains; Queen. 

 Dry hills, in the Upper Sonoran Zone. 



4. Baccharis sarothroides A. Gray, Proc. Amer. Acad. 17: 211. 1882. 



Type locality: "Southern borders of California, San Diego County, near the old 

 Mission station, the boundary monument, etc." 



Range: Southern California to southwestern New Mexico. 

 New Mexico: Near Carlisle (Wooton). Along streams. 



5. Baccharis salicina Torr. & Gray, Fl. N. Amer. 2: 258. 1842. 

 Baccharis salicifolia Nutt. Trans. Amer. Phil. Soc. n. ser. 7: 337. 1841. 

 Type locality: "Banks of the Arkansas." 



Range: Colorado and western Kansas to New Mexico and Texas. 

 New Mexico: Fruitland; Laguna; Albuquerque; San Juan. River valleys and 

 banks of streams, in the Upper Sonoran Zone. 



6. Baccharis emoryi A. Gray in Torr. U. S. & Mex. Bound. Bot. 83. 1859. 

 Type locality: On the Gila River, Arizona. 



Range: Colorado and New Mexico to Arizona and California. 



New Mexico: Roswell; Garfield. Along streams, in the Lower Sonoran Zone. 



7. Baccharis wrig-htii A. Gray, PI. Wright. 1: 101. 1852. 

 Type locality: Valley of the Limpio, western Texas. 



Range: Kansas and Colorado to Arizona, western Texas, and Mexico. 



New Mexico: McCarthys Ranch; Sierra Grande; Nara Visa; Las Vegas; Raton; 

 Albuquerque; Socorro Mountain; San Augustine Plains; Aden; between Tularosa 

 and Mescalero; Gray. Plains and dry hills, in the Upper Sonoran Zone. 



