79 

 Acacia greggii Gray. Devils Claw. 



Range. — From Western Texas (Rio Grande River) through southern New Mexico 

 and Arizona to southern California. 



Names in use. — Cat's Claw (Tex., Cal., Ariz.); Paradise Flower 

 (N. Mex.); Devil's Claws (Nev.); Ramshorn; Una de Gato. 



LETJCiENA Hooker. 

 Leucaena glauca (Linn.) Benth. Leucsena. 



RANGE.— Western Texas (from San Saba to Devils River); Florida (Key West); 

 Mexico; West Indies and Bahamas; South America (down, to southern Brazil); trop- 

 ical Africa and Asia. Native range uncertain; established mostly by cultivation. 



Leucaena pulverulenta (Sclileclit.) Beuth. Chalky Leucaena. 



RANGE. — Texas (few miles above mouth of Rio Grande River); Mexico (from 

 Matamoras .to Monterey in Nuevo Leon; Misantla River, near San Antonio; at 

 Orizaba and Cordova, near city of Mexico). 



Name in use. — Mimosa. 



PROSOPIS Linn. 



Prosopis odorata Torr. & Frein. Screwbean. 



Prosopis ptjbescens Benth. 



Range. — Western Texas (valley of Rio Grande River, from Devils River to El 

 Paso) ; west through New Mexico, Arizona, southern borders of Utah and Nevada to 

 California (arid region of Colorado Basin to San Diego County); northern Mexico. 



Names in use. — Screwbean (Tex., Utah, 1ST. Mex., Ariz., Nev., Cal.); 

 Screw-Pod Mesquite (Tex., Utah, Ariz., N. Mex., Nev., Cal.); Tornillo 

 (Tex., Utah, N. Mex., Ariz., Nev.); Mescrew (Nev.); Screwbean Mes- 

 quite (Ariz.). 

 Prosopis juliflora (Swartz) de C. Mesquite. 



Range. — From the southern border of Indian Territory and northern and western 

 Texas (eastern limit defined by a line from the intersection of latitude 37° with the 

 one hundredth meridian to Dallas; thence south to the Colorado River and south- 

 westward within 20 or 30 miles of the Gulf, which is reached near the mouth of the 

 Rio Grande River) into northern Mexico. Also from the southern borders of Colo- 

 rado and Utah through New Mexico, Arizona, and southern Nevada to southern 

 California (western limit defined by a line from Tejon Pass over Los Angeles to San 

 Pedro); in Lower California; western South America (Andean region to Chile); 

 Argentina and southern Brazil; Jamaica. 



Names in use. — Mesquite (Tex., N. Mex., Ariz., Cal.); Algaroba 

 (Tex., N. Mex., Ariz., Cal.); Honey Locust (Tex., N. Mex ); Honey Pod 

 (Tex.); Ironwood (Tex.). 



CERCIS Linn. 



Cercis canadensis Linn. Redbud. 



Raxge. — From New Jersey (Delaware River) and southern Michigan (Grand and 

 Raisin rivers) to Florida (Tampa Bay), northern Alabama (Tennessee River to 

 Madison, Monte Sano, Cullman, Tuscaloosa) and Mississippi; west to Missouri, 

 eastern borders of Indian Territory, Louisiana, Texas (Brazos River) ; Mexico (Sierra 

 Madre in Nuevo Leon). 



Names in use.— Redbud (Mass., N. Y. (cult.), N. J., Pa., Del., D. C, 

 Va., W. Va., N. C, S. C, Ala., Fla., Ark., Miss., La., Tex. ? Mo., 111., Ind., 



