638 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Baja California to Tamaulipas and Puebla. Western Texas and southern 

 Arizona. 



Shrub, 0.5 to 5 meters high, with thick, succulent, reddish-brown branches; 

 leaves usually fasciculate, 1 to 7 cm. long, linear to spatulate, entire or often 

 3-lobate; flowers very small, fasciculate, sessile or pedicellate; fruit usually 

 1-seeded. " Sangregrado " (San Luis PotosI, Sonora, Zacatecas, Durango, etc.) ; 

 " sangre de drago " (Durango, Chihuahua, Nuevo Leon, San Luis PotosI, 

 Hidalgo, Zacatecas, Mexico, Texas) ; "sangre de grado " (Durango, Coahuila) ; 

 " sangregado " {Urblna) ; " tecote prieto " (Sinaloa, Sonora) ; " tocote prieto " 

 (Sonora); " matacora," " torote prieto" (Baja California); " telondilla " 

 (Distrito Federal); "drago" (Texas, Tamaulipas); " piuon del cerro " 

 (Oaxaca, Villada) ; "torote amarillo " (Sonora); " coatli " (Sahagun) ; " tla- 

 palezpatli " (Herndndez). 



The stems are flexible and tough ; they are useful for whips and withes, 

 and have been used for making baskets. The bark is used for tanning and 

 dyeing, and has been exported for those purposes. It gives a dark red dye, 

 but is said to be injurious to cloth. The juice has astringent properties and is 

 used in domestic medicine for hardening the gums, for skin eruptions, sores, 

 dysentery, hemorrhoids, and venereal diseases, to prepare a gargle for sore 

 throat, as a wash to restore and give luster to the hair, and to remove stains 

 from the teeth. The roots are chewed to relieve toothache. 



The species exhibits great variation in the form of the leaves, even upon a 

 single plant. 



19. Jatropha neopaucifiora Pax in Engl. Pflanzenreich IV. 147: 134. 1910. 

 Mozinna pauciflora Rose, Contr. U. S. Nat. Herb. 12: 282. pi. 22. 1909. 

 Jatropha pauciflora Pax in Engl. Pflanzenreich IV. 147: 82. 1910. 



Puebla ; type from Tehuacan. 



Shrub, 3 to 4 meters high, similar to the last species ; leaves usually larger, 

 usually 1.5 to 3 cm. wide ; seed about 1 cm. in diameter. 



20. Jatropha cordata (Orteg.) Muell. Arg. in DC. Prodr. 15': 1078. 1866. 

 Mozinna cordata Orteg. Hort. Matr. Dec. 107. 1799. 



Loureira glandulosa Cav. Icon. PI. 5: 18. pi. Ji30. 1799. 



Sonora and southern Chihuahua to Jalisco. 



Shrub or small tree, 2 to 6 meters high ; leaves ovate-cordate, crenate, 

 usually not lobate, glabrous, lustrous. " Mata-muchachos " (Chihuahua); 

 " jiotillo " (Sinaloa). 



The bruised leaves are applied to sores, and they are added to water In 

 which children are bathed, because of supposed strengthening properties. The 

 juice is yellowish, and when dry forms a sulphur-colored powder. 



21. Jatropha vemicosa T. S. Brandeg. Zoe 5: 206. 1905. 



Southern Baja California ; type from mountains of the Cape Region. 

 Shrub, 2 to 4 meters high, glabrous ; leaves rounded-cordate, 3 to 7 cm. wide. 

 Rather doubtfully distinct from J. cordata. 



22. Jatropha cardiophylla (Torr.) Muell. Arg. in DC. Prodr. 15=': 1079. 1866. 

 Mozinna cardiophylla Torr. U. S. & Mex. Bound. Bot. 198. 18.59. 



Sonora. Southern Arizona ; type collected near Tucson. 

 Low glabrous shrub. " Torote " ( Sonora. ) 



The roots are employed for tanning. When dried they contain over five per 

 cent of tannic acid. 



23. Jatropha cinerea (Orteg.) Muell. Arg. in DC. Prodr. 15': 1078. 1866. 

 Mozinna cinerea Orteg. Hort. Matr. Dec. 107. 1799. 



Mozinna canescens Benth. Bot. Voy. Sulph. 52. pi. 25. 1844. 



