602 



OLEACEAE. 



[VOL. II. 



5. Fraxinus quadrangulata Michx. 

 Blue Ash. (Fig. 2842.) 



Fraxinus quadrangulata Michx. Fl. Bor. Am. 

 2: 255. 1803. 



A large forest tree, sometimes becoming 

 110 high, the trunk reaching 3 in diameter, 

 the twigs 4-sided, the foliage glabrous, or 

 sparingly pubescent when young. Leaflets 

 7-11, ovate, oblong or lanceolate, acuminate 

 at the apex, rounded or narrowed at the base, 

 short-stalked (2"-$"), green on both sides, 

 sharply serrate or serrulate, 3 '-5' long, i'-2' 

 wide; flowers dioecious, the calyx of the pis- 

 tillate ones deciduous or sometimes obsolete; 

 anthers linear-oblong; samara linear-oblong 

 or cuneatc, i / -2 / long, $"-1" wide, winged 

 all around, parallel-nerved, the body extend- 

 ing more than half-way to the apex. 



In woods, Ontario, Minnesota and Michigan 

 to Alabama, west to Iowa and Arkansas. Wood 

 heavy, hard, not strong, yellowish brown; 

 weight per cubic ft. 47 Ibs. March-April. 



4. Fraxinus Caroliniana Mill. Water 

 Ash. (Fig. 2841.) 



F. Caroliniana Mill. Diet, Ed. 8, no. 6. 1768. 

 F. platycarpa Michx. Fl. Bor. Am. 2: 256. 1803. 



A small tree, rarely over 40 high, the trunk 

 reaching about i in diameter, with terete 

 twigs and glabrous or slightly pubescent 

 foliage. Leaflets 5-7 (rarely 9), ovate, ovate- 

 lanceolate or oblong, acuminate or acute at 

 the apex, narrowed, or the lower ones rounded 

 at the base, long-stalked (4 // -8 // ), sharply ser- 

 rate, serrulate or sometimes entire, a'-s'long, 

 tft'-iy-t' wide; flowers dioecious, the calyx of 

 the pistillate persistent; anthers linear-oblong; 

 samara i / -2 / long, 4 // ~9 // wide, elliptic or 

 spatulate, the body linear, flat, broadly winged 

 all around, extending more than half way to 

 the apex of the fruit, the wing pinnately 

 veined; samaras sometimes 3-angled. 



In swamps and wet soil, southeastern Virginia 

 to Florida, west to Arkansas and Texas. Also in 

 Cuba. Wood light, soft, weak, yellowish white; 

 weight per cubic foot 22 Ibs. March-April. 



6. Fraxinus nigra Marsh. Black 

 Ash. Hoop Ash. (Fig. 2843.) 



Fraxinus nigra Marsh. Arb. Am. 51. 1785. 

 Fraxinus sambucifolia Lam. Encycl. 2: 549. 1786. 

 A swamp tree, reaching a maximum height 

 of about 100 and trunk diameter of 3, the 

 twigs terete, the foliage glabrous, except the 

 midrib of the lower surfaces of the leaflets. 

 Leaflets 7-11, sessile, green on both sides, ob- 

 long-lanceolate, long-acuminate at the apex, 

 narrowed or rounded at the base, sharply ser- 

 rate or serrulate, 3 / -6 / long, 9 // -i8 // wide; flow- 

 ers dioecious; calyx none; anthers short- oblong; 

 samara oblong or linear-oblong, parallel-nerved, 

 I'-i^' long, 3 // -4 // wide, the body flat, winged 

 all around, extending to or beyond the middle. 



In swamps and wet woods, Newfoundland to 

 Manitoba, south to Virginia and Arkansas. Wood 

 heavy, soft, not strong, dark brown ; weight per cubic 

 foot 39 Ibs. Lateral leaflets sessile. April-May. 

 Called also Water-ash. 



