1276 



FRAXINUS 



FRAXINUS 



EE. Lfts. sessile or short-stalked: branchlets and petioles 

 pubescent. 



13. velfttina, Torr. (F. pistacixfdlia, Torr.). Tree, to 

 40 ft., with velvety pubescent, rarely glabrous branches: 

 Ifts. 5-9, sometimes reduced to 3 or even 1, short- 

 stalked, oblong to lanceolate, usually 

 acuminate, narrowly cuneate at the base, 



entire or remotely serrate, yellowish green, 

 firm and thick at maturity, pubescent or 

 nearly glabrous beneath, 2-4 in. long: fr. 

 spatulate, with marginless body. Texas to 

 Ariz, and New Mex. S.S. 6:267. G.F.8:15. 

 F. Toumeyi, Brit., with narrower more 

 distinctly stalked Ifts., is probably only a 

 variety of this species. M.D.G. 1913:556; 

 also S.S. 6:267 represents this variety. 

 Particularly recommendable for saline and 

 alkaline soil, where but few trees will grow; 

 not hardy N. 



14. oregdna, Nutt. Tree, to 80 ft.: peti- 

 oles sometimes glabrous at length; Ifts. 

 7-9, almost sessile or short-stalked, oblong 

 or elliptic, acuminate, entire or obscurely 

 and remotely serrate, light green, 2^-6 in. 

 long, thick and firm at maturity: fr. ob- 

 long-obovate, with decurrent wing, about 

 Wash, to Calif. S. S. 6:276. 



1576. Key 

 of Fraxinus 

 nigra. (Nat- 

 ural size.) 



in. long. 



DD. Fr. elliptic or broadly spatulate, body compressed 

 with the wing all around. 



15. caroliniana, Mill. (F. platycdrpa, Michx. F. 

 triptera, Nutt.). WATER ASH. Tree, to 40 ft., with 

 pubescent or glabrous branches: Ifts. 5-7, stalked, 

 ovate or oblong, acuminate, broadly cuneate or some- 

 times rounded at the base, serrate, rarely entire, pubes- 

 cent or glabrous beneath, 2-5 in. long: fr. 1-2 in. 

 long, with pinnately veined wing, often 3-winged. Va. 

 to Fla., west to Ark. and Texas. S.S. 6:274, 275. 



cc. Lvs. usually simple, occasionally 8-5-foliolate: 

 branchlets quadrangular. 



16. an6mala, Wats. Shrub or tree, to 20 ft.: Ifts. 

 broadly ovate or roundish at the apex, rounded, acutish 



1577. Fraxinus excelsior. ( X H) 



or emarginate, entire or sparingly crenate-serrate, 

 glabrous and dark green above, paler and pubescent 

 below while young, 1^-2 in. long: fls. polygamous: 

 fr. obovate-oblong, rounded or emarginate at the apex, 

 %in. long. Colo., Utah, Nev. and S. Calif. S.S. 6:266. 



BB. The fls. without calyx (only No. 17 has a deciduous 

 minute calyx); anthers cordate, rarely broadly 

 oblong: Ifts. generally more than 7, nearly glabrous. 

 (Fraxinaster.) 

 c. Branches 4-angled and usually winged. 



17. quadrangulata, Michx. BLUE ASH. Tree, to 80, 

 rarely 120 ft.: Ifts. 7-11, short-stalked, ovate to lanceo- 

 late, acuminate, sharply serrate, yellowish green on 

 both sides, 3-5 in. long: fls. perfect: fr. oblong, emar- 

 ginate, winged all around, 1-2 in. long. From Mich, to 

 Ark. andTenn. S.S. 6:263. 



cc. Branches terete or nearly so. 



D. Rachis at the base of Ifts. with thick rufous tomentum: 

 fls. dwecious. 



18. nigra, Marsh. (F. sambucifolia, Lam.). BLACK 

 ASH. Fig. 1576. Tree, to 80 ft.: Ifts. 9-11, sessile, 

 oblong-lanceolate, rounded at the base, acuminate, 

 sharply serrate, green on both sides, dark above, 3-6 

 in. long: anthers broadly oblong: fr. narrow-oblong, 

 with decurrent wing. From Canada to Va., west to 

 Mo. S.S. 5:264,265. Em. 382. 



19. mandsch&rica, Rupr. (F '. nigra, var. mandshurica, 

 Lingelsh.). Tree, to 100 ft., with obtusely quadrangular 

 branches and dark brown buds: Ifts. 9-11, almost sessile, 

 ovate to oblong-lanceolate, sharply serrate, pubescent 

 or hispid on the veins beneath, 3-6 in. long: fr. oblong- 

 lanceolate, 1-1 J^ in. long. Manchuria, Korea, Saghalin, 

 Japan. S.I.F.2:62 (as F. Sieboldiana) . 



DD. Rachis without conspicuous rufous tomentum: fls. 



perfect or polygamous. 



E. Buds black. 



20. excelsior, Linn. Fig. 1577. Tall tree, to 120 ft.: 

 Ifts. 9-13, almost sessile, oblong-ovate or ovate-lanceo- 

 late, acute or acuminate, serrate, dark green above, 

 paler beneath, 2-5 in. long: fr. oblong, often emargi- 

 nate, about \}/2 in. long. Eu., W. Asia. H.W. 3:59, 

 pp. 115, 116. Gn. 22, p. 273. F.E. 24:395. Many 

 different varieties are cult., some of the most distinct 

 being the following: Var. albo-marginata, Hort. Lfts. 

 edged white. Var. argentea, Loud. (var. dlbo-variegdta, 

 Hort.). Lfts. blotched white. Var. lutea, Loud. Lvs. 

 variegated with yellow. Var. jaspidea, Desf. Bark of 



the young branches striped pink- 

 ish white. Var. aurea, Pers. With 

 yellow branches. Var. aftrea-pen- 

 dula, Loud. With pendulous yel- 

 low branches, but a somewhat 

 weak grower. Var. erosa, Willd. 

 (Var. asplenifdlia, Kirchn. Var. 

 laciniata, Hort. Var. elegantissima, 

 Hort. Var. scolopendrifplia, Hort.). 

 Lfts. very narrow, incisely serrate 

 and often almost linear. Var. 

 crispa, Willd. (Var. atrovirens, 

 Var. cuculldta, Hort.), with 

 very dark green curled and 

 twisted Ivs.; of slow growth. 

 Var. diversifdlia, Ait. (F. 

 heterophylla, Vahl. F. sim- 



plicifolia laciniata, Hort. F. rufa, Hort., not Bosc). 

 Lvs. simple or 3-parted, usually incisely dentate. Gn. 

 22, p. 273. Var. monophylla, Kuntze (F. monophylla, 

 Desf. F. simplicifdlia, Willd.). Lvs. simple, ovate, 

 serrate, rarely with 1 or 2 small Ifts. at the base. Var. 

 nana, Loud. (Var. polemoniifolia, Var. globosa, Hort.). 

 A compact, slow-growing, dwarf form with very 

 small Ivs. M.D.G. 1904:380. Var. pendula, Ait. V/ith 

 pendulous branches. One of the best pendulous trees 



