WOOTON AND STANDLEY FLORA OF NEW MEXICO. 403 



New Mexico: Sauta Fe; Pecos; Zuni Reservation; Saudia MouiilaiiLs; Socorro; 

 Mangas Springs; Gila; Nara Visa; Malaga; Tucumcari; south of Melrose. Plains and 

 low hills, in the Upper Sonoran Zone. 



A common weed in many parts of the State, especially abundant in draws or flats 

 on overstocked ranges. 



2. Croton luteovirens Woot. & Standi. Contr. U. S. Nat. Herb. 16: 145. 1913. 

 Type locality: On the Rio Gila, New Mexico. Type collected by Wooton, 



August 15, 1902. 



Range: Known oiilj'^ from the type locality. 



The plant is very abundant in this region, growing with the related C. texensis. 

 Patches of the two are distinguishable at a distance because of their different color. 



3. Croton fruticulosus Engehn. in Torr. U. S. & Mex. Bound. Bot. 194. 1859. 

 Type locality: "Mountain sides and rocky ravines, western Texas." 

 Range: Western Texas and southern New Mexico to Mexico. 



New Mexico: Organ Mountains. Rocky hills and canyons, in the Upper Sonoran 

 Zone. 

 A low shrub, 1 meter high or less. 



4. Croton coryinbulosus Engelm. in Wheeler, Rep. U. S. Surv. 100th Merid. 6: 



242. 1878. 



Type locality: Camp Bowie, Arizona. 



Range: Western Texas to Arizona, and southward. 



New Mexico: Silver City Draw; Organ Mountains; Tortugag Mountain; near 

 White Water; Tucumcari; Jarilla; between Fierro and Hanover; Pecos Valley. Sandy 

 mesas and barren rocky hills, in the Lower Sonoran Zone. 



6. Croton eremophilus Woot. & Standi. Contr. U. S. Nat. Herb. 16: 144. 1913. 



Type LOCALrrY: Dog Spring in the Dog Mountains, New Mexico. Type collected 

 by E. A. Mearns (no. 2336). 



Range: Southwestern New Mexico. 



New Mexico: Dog Spring; Parkers Well. Dry hills and plains, in the Lower 

 Sonoran Zone. 



6. Croton tenuis S. Wats. Proc. Amer. Acad. 14: 297. 1879. 



Croton californicus tenuis Ferguson, Rep. Mo. Bot. Gard. 12: 64. 1901. 

 Type locality: Southern California. 



Range: Southwestern New Mexico to California and adjacent Mexico 

 New Mexico: Near White Water {Mearns 2269). 



7. Croton neomexicanus Muell. Arg. Linnaea 34: 141. 1865. 

 Type locality: Western Texas. 



Range: Western Texas, southern New Mexico, and adjacent Mexico. 

 New Mexico: Grant County; mesa west of Organ Mountains; Guadalupe Moim- 

 tains. Mesas and low, dry hills, in the Lower Sonoran Zone. 



12. ACALYPHA L. Three-seeded mercury. 



Annual or perennial herbs with simple petiolate leaves and monoecious flowers in 

 axillary or terminal spikes; leaves thin, punctate, serrate; staminate flowers with 4 

 sepals and 8 to 16 united stamens; pistillate flowers subtended by foliaceoua bracts, 

 the sepals 3 to 5, the stigmas fringed; fruit a 3-celled 3-seeded capsule. 



key to the specie.s. 



Annual; stigmas greenish, inconspicuous; inflorescence mostly 



axillary 1. A. neomexicana. 



Perennial; stigmas bright red, showy; inflorescence terminal 2. A. lindheimeri. 



