678 CONTEIBUTIONS FROM THE NATIONAL HEKBAKIUM. 



Range: Wyoming and South Dakota to Utah and New Mexico. 



New Mexico: Tunitcha Mountains; Chama; Tierra Amarilla; Espanola; Pajarito 

 Park; Santa Fe and Las Vegas mountains; Raton; Hanover Mountains; Ruidoso 

 Creek. Open slopes and meadows, chiefly in the Ti-ansition Zone, sometimes in the 

 Upper Sonoran. 



9. Erigeron senilis Woot. & Standi. Contr. U. S. Nat. Herb. 16: 185. 191;]. 



Type locality: Canyon above Van Pattens Camp in the Organ Mountains, New 

 Mexico. Type collected by Standley, June 9, 1906. 

 Range: Organ Mountains, New Mexico. 



10. Erigeron philadelphicus L. Sp. PI. 863. 1753. 

 Type locality: "Habitat in Canada." 



Range: British America to California, New Mexico, and Florida. 



New Mexico: Aztec; San Juan; Pecos; Cienaga Ranch; Socorro; near Mesilla; 

 Wliite and Sacramento mountains. Meadows, in the Upper Sonoran and Transition 

 zones. 



11. Erigeron gUensis Woot. & Standi. Contr. U. S. Nat. Herb. 16: 184. 1913. 

 Type locality: North Fork of the Rio Gila, New Mexico. Type collected by 



Wooton, August -1, 1900. 



Range: Known only from tyi^e locality. 



12. Erigeron modestus (DC.) A. Gray, Mem. Amer. Acad. n. eer. 4: 68. 1849. 

 Distasis modcsta DC. Prodr. 5: 279. 1836. 



Type locality: Laredo, Texas. 



Range: Western Texas to eastern New Mexico. 



New Mexico: Llano Estacado (Bigelow). Plains, in the Upper Sonoi'an Zone. 



13. Erigeron bellidiastrum Nutt. Trans. Amer. Phil. Soc. n. ser. 7: 307. 1841. 

 Type locality: "On tlie borders of the Platte, within the Rocky Mountains." 

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



New Mexico: Nara Visa (Fisher 15, 81). Plains, in the Upper Sonoran Zone. 



14. Erigeron eastwoodiae Woot. & Standi. Contr. U. S. Nat. Herb. 16: 183. 1913. 

 Type locality: Dry hills at the north end of the Carrizo Mountains, northeast corner 



of Arizona. Type collef^ted by Standley (no. 7433). 



Range: Southern Utah and Colorado to northern Arizona and New Mexico. 



New Mexico: Carrizo Mountains; Shiprock. Sandy hills and plains, in the LTpper 

 Sonoran Zone. 



15. Erigeron wootoni Rydb. Bull. Torrey Club 33: 153. 1906. 

 Erigeron cinereus var. j- A. Gray, Mem. Amer. Acad. n. ser. 4: 68. 1849. 



Type locality: Valley of Santa Fe Creek, New Mexico. Type collected by Fend- 

 ler (no. 385). 



Range: Colorado to Arizona and New Mexico. 



New Mexico: Carrizo Mountains; Tunitcha Mountains; Chama; Santa Fe and Las 

 Vegas mountains; head of Canada Alamosa; "Wliite Mountains. Hills and meadows, 

 in the Upper Sonoran and Transition zones. 



It Is doubtful whether this is In any essential respect different from Erigeron divergens. 

 The two are almost invariably found growing together. 



16. Erigeron arenarius Greene, Bull. Torrey Club 25: 121. 1898. 



Type locality: Sandhills near Mesilla, New Mexico. Type collected Ijy Wooton 

 (no. 23). 



Range: Southwestern New Mexico. 



New Mexico: Mangas Springs; Mesilla Valley; northeast corner of Turney Range, 

 Dona .\iia County. Sandy soil, in the Lower Sonoran Zone. 



The species is very alnindant about the type locality, growing on dunes of nearly 

 pure sand. It occurs at a much lower level than most of the species and comes into 



