WOOTON AND STANDLEY FLORA OF NEW MEXICO. 399 



3. Chamaesyce nutans (Lag.) Small, Fl. Southeast. U. S. 712. 1903. 

 Euphorbia nutans Lag. Gen. & Sp. Nov. 17. 1816. 



Euphorbia preslii Guss. Fl. Sic. Prodr. 539. 1827. 

 Type locality: "Habitat in N. [ova] H. [ispania]." 



Range: Eastern North America, west to the Rocky Mountains, south into Mexico. 

 New Mexico: Mangas Springs; Organ Mountains; Lower Plaza; Roswell. Damp 

 fields and canyons, in the Upper Sonoran Zone. 



4. Chamaesyce serrula (Engelm.) Woot. & Standi. Contr. U. S. Nat. Herb. 16: 



144. 1913. 



Euphorbia serrula Engelm. in Torr. U. S. & Mex. Bound. Bot. 188. 1859. 



Type locality: "Western Texas and New Mexico." 



Range : Western Texas to Arizona and adjacent Mexico. 



New Mexico: Farmington; Tesuque; mesa west of Organ Mountains; White Sands; 

 south of Roswell; Carlsbad. Dry plains and hills, in the Lower and Upper Sonoran 

 zones. 



5. Chamaesyce serpyllifolia (Pers.) Small, Fl. Southeast. U. S. 712. 1903 

 Euphorbia serpyllifolia Pers. Syn. PI. 2: 14. 1807. 



Type locality: "In Amer. [ica] caUdiore." 

 Range: Wisconsin to California, south to Mexico. 



New Mexico: Common throughout the State except along the eastern border. 

 Plains and low hills, Lower Sonoran to Transition Zone. 



6. Chamaesyce neomexicana (Greene) Standley, Contr. U. S. Nat. Herb. 13: 199. 



1910. 

 Euphorbia neomexicana Greene, Bull. Calif. Acad. 2: 55. 1886. 

 Type locality: Plains of the upper Gila in western New Mexico. 

 Range: Southwestern New Mexico and adjacent Arizona. 



New Mexico: Hillsboro; Sycamore Creek; Organ Mountains; Gray; south of Ros- 

 well. Upper Sonoran Zone. 



7. Chamaesyce lata (Engelm.) Small, Fl. Southeast. U. S. 710. 1903. 

 Euphorbia lata Engelm. in Torr. U. S. & Mex. Bound. Bot. 188. 1859. 

 Type locality: Western Texas. 



Range: Kansas to Texas and New Mexico, 



New Mexico: Organ Mountains; Roswell; Nara Visa; Carrizozo; south of the White 

 Sands; Guadalupe Mountains; Buchanan; Redlands; Carlsbad. Plains, Lower and 

 Upper Sonoran zones. 



8. Chamaesyce albomarginata (Torr. & Gray) Small, Fl. Southeast. U. S. 710. 



1903. 



Euphorbia albomarginata Torr. & Gray, U. S. Rep. Expl. Miss. Pacif. 2^: 174. 1855. 



Type locality: "Head-waters of the Colorado." 



Range: California to Texas and southward. 



New Mexico: Fort Wingate; Socorro; Mangas Springs; Kingston; Deming; Organ 

 Mountains; mesa near Las Cruces; Tucumcari; Gray; south of Roswell; Tularosa; 

 CarrizaUllo Mountains; Zuni; Water Canyon. Dry plains and hills, in the Lower 

 and Upper Sonoran zones. 



9. Chamaesyce fendleri (Torr. & Gray) Small, Fl. Southeast. U. S. 710. 1903. 

 Euphorbia fendleri Torr. & Gray, U. S. Rep. Expl. Miss. Pacif. 2^: 175. 1855. 

 Type locality: New Mexico. Type collected by Fendler (no. 800). 

 Range: Wyoming and Nebraska to Texas and Arizona. 



New Mexico: Nearly throughout the State. Dry hills and plains, in the Lower 

 and Upper Sonoran zones. 



