1136 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



10. Fraxinus berlandieriana A. DC. in DC. Prodr. 8: 278. 1844. 



Coahuila to Veracruz and Durango. Western Texas, the type from Austin. 



Tree, 10 to 12 meters high, the trunk about 30 cm. in diameter ; bark thick, 

 gray, fissured; leaflets 3 to 7, lanceolate or oblong, petiolulate, 4 to 13 cm. 

 long, acute or attenuate, thick, remotely serrulate or subentire; flowers 

 dioecious; samaras 2.5 to 3.5 cm. long, the body terete. " Plumero " (Vera- 

 cruz); " f resno " (Nuevo Le6n, Durango). 



This species is often planted as a shade tree in northeastern Mexico. The 

 samaras are sometimes 3-winged. 



11. Fraxinus velutina Torr. in Emory, Mil. Reconn. 149. 1848. 

 Fraxinus pistaciaefolia Torr. U. S. Rep. Expl. Miss. Pacif. 4: 128. 1856. 

 Fraxinus toumeyi Britton, N. Amer. Trees 803. f. 132. 1908. 

 Fraxinus velutina toumeyi Rehder, Proc. Amer. Acad. 53: 204. 1917. 

 Sonora and Chihuahua; perhaps also in Baja California. Western Texas 



to soythern California ; type from New Mexico. 



Small tree, usually 12 meters high or less, the trunk 20 cm. in diameter; 

 bark gray and rough ; leaflets 5 to 9, oblong, lanceolate, or ovate-oblong, 4 to 

 7 cm. long, acute or acuminate, serrate or subentire ; samaras 2 to 3 cm. long, 

 the body terete, the wing obtuse or emarginate. " Fresno." 



12. Fraxinus uhdei (Wenzig) Lingelsheim, Bot. Jahrb. Engler 40: 221. 1.907. 

 Fraxinus americana uhdei Wenzig, Bot. Jahrb. Engler 4: 182. 1883. 

 Sinaloa to San Luis Potosf, Veracruz (?), and Oaxaca. 



Tree, 15 to 18 meters high, with dark furrowed bark ; leaflets 5 to 9, usually 

 long-petiolulate, lanceolate or oblong-lanceolate 7 to 15 cm. long, long-attenuate, 

 obtuse or acute at base, serrulate, barbate beneath along the costa but else- 

 where glabrous; flowers in large panicles, these sometimes 20 cm. long; samaras 

 2.5 to 4 cm. long. "Fresno" (Jalisco, Sinaloa). 



Often planted as a shade tree in the Valley of Mexico, at Guadalajara, and 

 elsewhere. 



It is not certain that the specimens described and referred here are identical 

 with those to which Wenzig applied the name uhdei. They agree well with 

 his diagnosis except for his statement that the leaflets are sessile. 



13. Fraxinus papillosa Lingelsheim, Bot. Jahrb. Engler 40: 219. 1907. 

 Mountains of Chihuahua ; type from Colonia Garcia. Southern New Mexico. 

 Tree ; leaflets 5 to 9, sessile, elliptic to ovate-oblong, 3 to 6 cm. long, acute, 



serrulate or subentire, glabrous ; samaras 2.5 to 3 cm. long, the wing obtuse or 

 emarginate. 



14. Fraxinus standleyi Rehder, Proc. Amer. Acad. 53: 208. 1917. 

 Mountains of nortliern Sonora. Southern New Mexico and Arizona ; type 



from Organ Mountains, New Mexico. 



Tree, usually small but sometimes 15 meters high ; leaflets 5 to 9, sessile or 

 petiolulate, elliptic to lanceolate, 4 to 11 cm. long, acute or attenuate, serrulate, 

 glabrous or pubescent beneath ; samaras 2 to 3 cm. long. 



It is doubtful whether this is distinct from F. papillosa and F. pringlei, and 

 the three will probably have to be united ultimately. 



15. Fraxinus pringlei Lingelsheim, Bot. Jahrb. Engler 40: 221. 1907. 

 Hidalgo; type from DublS,n. 



Large tree; leaflets 3 to 7, elliptic to lanceolate, 3 to 11 cm. long, acuminate, 

 serrate, glabrous or nearly so ; panicles 5 to 20 cm. long ; samaras 2 to 3.5 cm. 

 long, the body terete, the wing obtuse or emarginate. 



