548 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



employed for dysentery, dropsy, venereal diseases, yellow fever, and other 

 affections. 



In Florida the tree is known as " gumbolimbo," a name used also by the 

 Jamaican negroes, an apparent corruption of " soma elenu," the name some- 

 times given by the Spaniards to the gum.' The fruit is eaten by birds and pigs. 



For an illustration of EJaphrium slniaruha see Contr. U. S. Nat. Herb. 8: 

 pi 21. 



14. Elaphrium diversifolium Rose, N. Anier. Fl. 25: 248. 1911. 

 Btirsera diversifoUa Rose, Contr. U. S. Nat. Herb. 5: 113. 1897. 

 Chiapas ; type collected between Ocuilapa and Tuxtla. 



Tree, 3.5 to 7.5 meters high, copiously pubescent ; leaflets 9 to 13, the lower 

 onos pinnate, or tiie leaves often simply pinnate. 



15. Elaphrium collinum (T. S. Brandeg.) Rose, N. Amer. Fl. 25: 248. 1911. 

 Bursera collina T. S. Brandeg. Zoe 5: 204. 1905. 



Known only from the type locality, Cofradfa, Sinaloa. 

 Leaves copiously pubescent. 



16. Elaphrium gracile (Engl.) Rose, N. Amer. Fl. 25: 249. 1911. 

 Bursera gracilis Engl, in DC. Monogr, Phan. 4: 50. 1883. 



Jalisco to Morelos and Chiapas; type from Xochiculco, Oaxaca. Guatemala. 



Tree, sometimes 9 meters high; flowers greenish white; fruit green or 

 brownish red. " Copal santo," " copal chino Colorado," " incienso del pais " 

 {Oaxixca, Reko) ; "copal" (Guatemala). 



It is not certain that this is specifically distinct from the next species. 



17. Elaphriumi bipinnatum (DC.) Sohlecht. Linnaea 17: 631. 1843. 

 Amyrts Mpinnata DC. Prodr. 2: 82. 1825. 



Bursera Mpinnata Engl, in DC. Monogr. Phan. 4: 49. 1883. 



Sinaloa and southern Chihuahua to Guerrero and Morelos. 



Shrub or small tree, sometimes 12 meters high, with a trunk 50 cm. in diam- 

 eter; leaves fernlike, with very numerous small leaflets. " Jabcncillo " (Chi- 

 huahua) ; "copal chino," "copal amargo " (Michoacdn) ; "copal amargoso " 

 (Guerrero, Ramirez); "incienso del pafs," " tetlate," " tetlatfa " (Morelos, 

 Ramirez); " tetlatian," " tetlatin " {Ramirez); "copal amargo" {Conzatti) ; 

 " palo copal" (Sinaloa) ; " cuajiote Colorado" {ViUada). 



The resin is employed in Sinaloa for treating wounds. 



18. Elaphrium aridum Rose, N. Amer. Fl. 25: 249. 1911. 

 TereUnthus arlda Rose, Contr. U. S. Nat. Herb. 10: 118. 1906. 



Known only from the vicinity of the type locality, dry hills about Tehuacdn, 

 Puebla. 



Low shrub ; leaflets green, 4 to 6 mm. long, rounded at apex, glabrous or 

 nearly so. 



19. Elaphrium microphyllum (A. Gray) Rose, N. Amer. Fl. 25: 250. 1911. 

 Bursera microphyUa A. Gray, Proc. Amer. Acad. 5: 155. 1861. 



Bursera morelensis Ramirez, Anal. Inst. Med. Nac. Mex. 2: 17. 1896. 



TereUnthus muUifolia Rose, Contr. U. S. Nat. Herb. 10: 120. 1906. 



Dry plains and hillsides, Sonora and Baja California to Zacatecas, Morelos, 

 and Puebla ; type from Baja California. Southern Arizona. 



Shrub or tree, sometimes 9 meters high, with reddish branches ; leaflets 

 usually 11 to 35, obtuse, glabrous. "Torote" (Sonora, Baja California); 

 " torote bianco " (Sonora); "copal" (Baja California); "cuajiote Colorado" 

 (Morelos). 



' See W. E. Safford, Natural history of Paradise Key and the near-by Ever- 

 glades of Florida, Smithson. Rep. 1917: 377-434. pi. 1-64. 1920. 



