200 REHDER. 



Key of the species. 



Flowers with petals: branchlets slender, terete: leaves 3-9-foliolate. 



1. F. cuspidata. 

 Flowers without petals. 



Body of the fruit nearly terete with the wing almost terminal extending 

 scarcely below the middle: branches terete. 

 Leaflets 3-7: body of the fruit narrowly cylindrical, gradually narrowed 

 toward the base, 1.5-2 mm. thick, about 5-8 times as long as thick, 

 wing shorter than the body, linear or spatulate, 3-5 mm. broad. 



2. F. velutina. 



Leaflets 7-9, rarely 5: body of the fruit ellipsoid to oblong, rather 



abruptly contracted at the base, 2.5-3.5 mm. thick, about 2-4 times 



as long as thick, wing usually longer then the body, linear-oblong, 



5-7 mm. broad. 



Under side of the leaflets green or glaucescent, not papillose. 



3. F. Standleyi. 



Under side of the leaflets glaucous, papillose 4. F. papillosa. 



Body of fruit much compressed, with the wing extending to the base of the 

 body : branchlets more or less quadrangular. 



Leaves pinnate, 3-7-foliolate 5. F. Lowellii. 



Leaves simple, only occasionally 3-foliolate 6. F. anomala. 



1. Fraxinus cuspidata Torrey in Rep. U. S. & Mex. Bound. 

 Surv. II. pt. 1 (Bot.) 166 (1859).— Gray, Syn. Ft. N. Am. II. pt. 1, 

 74 (1878).— Hemsley, Bot. Biol. Am. Cent. II. 304 (1881-82).— 

 Wenzig in Bot. Jahrh. IV. 171 (1883).— Havard in Proc. U. S. 

 Nat. Mu^. VIII. 510 (1885).— Pringle in Gard. & Forest, I. 142 

 (1888).- Sargent in Gard. & Forest, II. 447 (1889); Silva N. Am. VI. 

 29 (excl. tab.) 1894); Man. Trees N. Am. 759 (excl. fig.) (1905).— 

 Coulter in Co7itrib. U. S. Nat. Herb. II. 259 (1892).— Wesmael in 

 Bull. Soc. Bot. Belg. XXXI. 80 (1892).— Britton, Trees N. Am. 810, 

 fig. 142 (1908).— Schneider, ///. Handb. Laubhohk. II. 820, fig. 514 

 k-m, 516 d (1912).— Wooton & Standley in Contrib. U. S. Nat. 

 Herb. XIX. 496 {Fl. N. Mex.) (1915). 



0mw5 cuspidata Nieuwland in Am. Midland Nat. III. 187 (1914). 



New Mexico. Otero Co.: Sacramento Mts., Fresnai Canyon, 

 alt, 1800 m., August 18, 1914' and August 24, 1916, A. Rehder (Nos. 

 333, 422, 425, 4256 (pubescent form) . D o n a A n a C o. : San Andreas 

 Mts., Ash Spring Canyon, May 24, 1913, E. 0. JVooton (U. S. Nat. 

 Herb. No. 661852). Grant Co.: Big Hatchet Mts., May 18, 1892, 

 E. A. Mearns (No. 127), alt. 2200 m., July 23, 1908, E. A. Goldman 

 (No. 1337). ValeneiaCo.: McCarthy's Station, July 25, 1889, 



