80 OLEACEAE 



Southern California (Sargent, Man. Trees N. Am. 777; Sudworth, Forest Trees Pac. Slope, 425; 

 Parish, Zoe 4:344), specimens of Fraxinus velutina and its var. coriacea having been mlsdeter- 

 mined as Fraxinus oregona. The best distinction between Fraxinus oregona and Fraxinus velu- 

 tina resides in the fruit. The wing of the fruit in F. oregona extends to the base of the body, 

 much narrowed to be sure, often almost obsolete, but still observable. The fruit in F. velutina is 

 winged only at the summit ; the body is unwinged and rounded or cylindric in a way which F. ore- 

 gona never is. Both Fraxinus velutina and its variety coriacea are rather rare in Southern Cali- 

 fornia and infrequently met with in the field, both as to eismontane and transmontane areas. 



Fraxinus velutina is extremely variable in outline of leaflets, but the fine villous tomentulum 

 on the under surface of the leaflets is usually unmistakable. As to the variety coriacea one can 

 collect in an extremely narrow area on Ash Creek, Owens Lake, a striking diversity of leaflet form. 

 Even so, neither of these compare in range of leaf variation with Fraxinus oregona as it occurs in 

 Napa Valley and elsewhere in the North Coast Range country. 



Locs.— -Coast Ranges: GUroy, Jepson 14,603; Walnut Creek, Jepson; Mt. Tamalpais, Jepson 

 14,601; Cordelia, Jepson 3079; St. Helena, Jepson 508; GuernevUle, Jepson 2364; MiU Creek, 

 Ukiah, Jepson ; Tomki Creek, e. Mendocino Co., Jepson 14,600 ; Briceland, Humboldt Co., Jepson 

 2205 ; Trinity River Valley at Willow Creek, Tracy 8414 ; Redding, Blankinship ; Dunsmuir, Shasta 

 Co., Geo. B. Grant 5181 ; Cottage Grove, Klamath River, Jepson. Lower San Joaquin Valley : Dry 

 Creek, Modesto, Hoover 3879 ; Stockton. Sacramento Valley : Rio Vista ; Walnut Grove, Tyler 

 Isl., Jepson 14,606. Sierra Nevada: North Tule River, Furpus 1711; North Fork Kaweah River, 

 Jepson; El Portal, Mariposa Co., Jepson; Berry Creek, Butte Co., Jepson; Belden, Plumas Co., 

 Jepson; Middle Creek sta., Shasta Co., Heller 7956 ; Egg Lake, Modoc Co., M. S. Baker. 



Refs. — Fraxinus oregona Nutt., Sylva 3:59, t. 99 (1849), type loc. "Oregon territory," 

 Nuttall; Jepson, Fl. W. Mid. Cal. 385 (1901), ed. 2, 319 (1911), Silva Cal. 278 (1910), Trees 

 Cal. ed. 2, 230 (1923), Man. 759, fig. 740 (1925). 



2. F. velutina Torr. Arizona Ash. Tree 15 to 30 feet high; shoots of the 

 season and rachises villous or puberulent, the leaflets beneath villous-tomentulose 

 or puberulent, above glabrous or nearly so ; leaflets 5, lanceolate to narrowly ovate, 

 oval or obovate, acute or less commonly attenuate, I14 to 4 inches long; samaras 1 

 to IV2 inches long, the wing 11/4 to 31-^ lines wide, not decurrent on the body or 

 rarely weakly on upper portion, the body therefore essentially cylindric. 



Caiion sides and bottoms, 250 to 2500 feet : San Gabriel Mts. ; San Jacinto Mts. ; 

 Cuyamaca Mts. East to Arizona. May, fr. July-Nov. 



Locs. — West Fork San Gabriel River, San Gabriel Mts., Peirson 2459; Kenworthy (e. of), 

 San Jacinto Mts., Hall 959 ; Warner Pass, e. San Diego Co., B. W. Sumner ; near Mountain Sprs., 

 e. San Diego Co., B. W. Sumner. The petiolules of the two last-cited spms. are as long as those of 

 the var. coriacea. In the species the lateral nerves of the leaflets are weaker and less straight 

 than in the leaflets of the var. coriacea. 



Var. coriacea Rehd. Shoots of the season and rachises glabrous; leaflets 3 to 7, oval or 

 round-ovate to narrowly lanceolate, often abruptly acute or attenuate, glabrous or slightly 

 puberulent beneath, the lateral nerves straight, regular, sharply defined ; samaras similar to those 

 of the species, 11 to 14 lines long, the wing 2% to 2% lines wide. — Canons and along streams, 600 

 to 4000 feet: Cuyamaca, San Jacinto, San Bernardino and San Gabriel mountains; north to the 

 Sierra Nevada in Kern Co. and to Inyo Co. East to Nevada and Utah. 



Locs. — Cuyamaca, B. W. Sumner; above Ribbonwood, betw. Pinon Flat and Vandeventer 

 Flat, Santa Rosa Mts., Clary 1206; Palm Canon of San Jacinto Mts., Jepson 14,599; Pipe Creek, 

 Kenworthy, Munz 5810; Santa Ana River near Corona, Johnston 1804 (doubtless a waif) ; San 

 Bernardino, Parish; Lytle Creek, San Gabriel Mts., Peirson 2144; Victorville, Parish 10,547; 

 Onyx, South Fork Valley, Kern Co., E. JV. Voegelin 24 ; Greenhorn Mts., Purpus 5555 ; Ash Creek, 

 Owens Lake, Jepson 5130. 



Refs. — Fraxinus velutina Torr.; Emory, Mil. Reconn. 149 (1848), type loc. "betw. the 

 waters of the [Rio Grande] Del Norte and the Gila" rivers; Jepson, Silva Cal. 279 (1910), Trees 

 Cal., ed. 2, 230 (1923), Man. 759 (1925). Var. coriacea Rehd., Proc. Am. Acad. 53:206 (1917) ; 

 Jepson, Trees Cal. 230 (1923), Man. 759 (1925). F. coriacea Wats., Am. Nat. 7:302 (1873), 

 type loc. Ash Mdws., Nov., Wheeler; Jepson, SUva Cal. 279 (1910). F. oregona var. glabra 

 Lingelsh. ; Engler, Pflzr. i-'^^''^-- -.43 (1920). From the citations and synonymy it is to be observed 

 that Watson's F. coriacea was independently reduced by three different authors, Rehder, Lingels- 

 heim and the writer. 



3. F. anomala Torr. Dwarf Ash. Tree 15 to 20 feet high, or a low spreading 

 shrub; leaves simple, the blade roundish or broadly ovate, li/4 to 2 inches long, or 

 compound with 2 or 3 similar leaflets; flowers perfect and pistillate; samaras with 

 an oblong rounded wing which surrounds the body, 8 to 9 lines long and 4 to 5 lines 

 wide. 



