546 CONTRIBUTIONS FEOM THE NATIONAL HERBARIUM. 



2. Elaphrium cerasifolium (T. S. Brandeg.) Rose, N. Amer. Fl. 25: 244. 1911. 

 Bursera cerasifolia T. S. Brandeg. Proc. Calif. Acad. II. 3: 121. 1891. 

 Southern Baja California ; type from San Jose del Cabo. 



Small tree, 4 to 8 meters high, with reddish brown branchlets ; leaves bright 

 green, 3 to 6 cm. long, glabrous. 



3. Elaphrium simplicifolium Schlecht. Linnaea 16: 532. 1842. 

 Bursera schlechtendalii Engl, in DC. Monogr. Phan. 4: 41. 1883. 

 Bursera jonesii Rose, Contr. U. S. Nat. Herb. 3 : 314. 1895. 

 Jalisco to Chiapas. Guatemala. 



Shrub or small tree, 2 to 3 meters high, glabrous, with grayish or brownish' 

 branches ; leaves 1 to 3.5 cm. long, rounded to acutish at apex. 



4. Elaphrium multijugum (Engl.) Rose, N. Amer. Fl. 25: 248. 1911. 

 Bursera multijuga Engl, in DC. Monogr. Phan. 4: 42. 1883. 



Colima (type locality) and perhaps elsewhere; not seen by the writer. 

 Leaflets acute, glabrous; panicles 1.5 to 3.5 cm. long; flowers greenish yel- 

 low. " Cuajiote amarillo " (Engler). 



5. Elaphrium karwlnskii (Engl.) Rose, N. Amer. F'. 25: 248. 1911. 

 Bursera karwinskii Engl, in DC. Monogr. Phan. 4: 43. 1883. 

 Known only from the type locality, TolimSn, Quer^taro. 

 Leaflets glabrous. 



6. Elaphrium kerberi (Engl.) Rose, N. Amer. Fl. 25: 247. 1911, 

 Bursera Tcerheri Engl, in DC. Monogr. Phan. 4: 41. 1883. 

 Jalisco and Colima ; type from Colima. 



Shrub or small tree; bark peeling off in thin, reddish brown sheets; leaf- 

 lets 3, sessile, oblong-lanceolate to oval-oblong, 4 to 9 cm. long, finely crenate- 

 serrate, glabrous, usually cuspidate-acuminate. 



7. Elaphrium lancifolium Schlecht. Linnaea 17: 247. 1843. 

 Bursera lancifolia Engl, in DC. Monogr. Phan. 4: 42. 1883. 

 Known only from the type collection, perhaps from Veracruz. 

 Leaflets 3 to 7, lanceolate, 5 to 6 cm. long, glabrous. 



8. Elaphrium trijugum (Ramirez) Rose, N. Amer. Fl. 25: 248. 1911. 

 Bursera trijuga Ramirez, Anal. Inst. M^d. Nac. Mex. 2: 16. pi. 2. 1896. 

 Morelos ; type from Distrito de Ayala. 



Leaflets 7, 4 to 7.5 cm. long, glabrous. " Cuajiote cliino." 



9. Elaphrium schafEneri (S. Wats.) Rose, N. Amer. Fl. 25: 245. 1911. 

 Bursera schaffneri S. Wats. Proc. Amer. Acad. 22: 469. 1887. 



San Luis Potosf ; type from Morales Mountains. 

 Leaflets 3 to 7, obovate or suborbicular, glabrous. 



Elaphrium obovatutn (Turcz.) Rose* is a closely related species, if not 

 the same as E. schaffneri. The type is from Orizaba. 



10. Elaphrium grandifolium Schlecht. Linnaea 17: 249. 1843. 

 Bursera cinerea Engl, in DC. Monogr. Phan. 4: 43. 1883. 

 Bursera grundifolia Engl, in DC. Monogr. Phan. 4: 45. 1883. 

 Elaphrium occiclentale Rose, N. Amer. Fl. 25: 246. 1911. 

 Sinaloa to Oaxaca and Veracruz. 



Tree, 3 to 9 meters high or larger, the trunk often 45 cm. in diameter, 

 the bark purplish green, finally peeling off in papery brownish sheets; leaf- 



* N. Amer. Fl. 25: 245. 1911. Bursera obovata Turcz. Bull. Soc. Nat. Moscou 

 36': 614. 1863. 



