^6 Spri)ig Flora of Ohio. 



Di-os py'-ros vir-gin-i-a'-na L. Persimmon. — Leaves ovate-oblong, 

 thickisli; corolla pale yellow, Vz-- -f, in. long in the fertile flowers, 

 much smaller in sterile ; fruit plum-like, ver}' astringent, sweet and 

 edible after exposure to frost. 



LXIX. Order 0-LE-A-CE-/E. OLIVE FAMILY.— Trees or shrubs; 

 leaves opposite, pinnate, or simple; flowers sometimes apetalous; 

 ovary 2-celled. 



Leaves simple, fruit a fleshy drupe or berr>' (a". 



Leaves simple ; fruit a dry, 2-celled capsule Svringa. 1 



Leaves pinnate ; fruit a winged samara Fraximts. 2 



a. Corolla-lobes long, linear : fruit a fleshy drupe Chionanthus. :5 



a. Corolla-lobes short : fruit a berry Lignstrjim. 4 



1. Genus SYR-IN'-GA. — Calyx small, 4-toothed; corolla salver- 

 form, stamens short, included; leaves simple, entire; shrubs. 



Syr-in'-ga vul-ga'-ris L. Common Lilac. — Leaves cordate-ovate; flow- 

 ers showy, lilac, purple or white. Cultivated; occasionally escaped. 



2. Genus FRAX'-I-NUS. — Calyx small and4-cleft; corolla absent; 

 fruit a samara, wanged at the apex; trees, with pinnate leaves. 



\. Leaflets zcith short petioles. 



Frax'-i-nus a-mer-i-ca'-na L. White Ash. — Branchlets and petioles 

 glabrous; leaflets 7-9, ovate-oblong or lanceolate-oblong, pointed, pale 

 beneath, entire or sparingly serrate or denticulate. 



Frax'-i-nus penn-syl-van'-i-ca Marsh. (P. pnbescetis ham.) Red Ash.— 

 Branchlets and petioles velvety-ptibescent ; leaflets 7-9, ovate or ovate- 

 lanceolate, taper-pointed, almost entire, pale or more or less pubescent 

 beneath. 



Frax'-i-nus lan-ce-o-la'-ta Borck. (F. viridis Mx.) Green Ash. — Glab- 

 rous throughout; leaflets 5-9, ovate or oblong-lanceolate, often wedge- 

 shaped at base and serrate above, bright-green both sides. 



Frax'-i--nus quad-ran-gu-la'-ta Mx. Blue Ash. — Branchlets square at 

 least on vigorous shoots ; leaflets 7-9, oblong-ovate or lanceolate, 

 shar])ly serrate, green both sides. 

 A. Lateral leaflets sessile. 



Frax'-i-nus ni'-gra Marsh. (/". saiiibiici/o/ia Lam.) Black Ash. — 

 Branches and petioles glabrous; leaflets 7-11, sessile, oblong-lanceo- 

 late, serrate, obtuse or rounded at base. In swamps and wet places. 



