Vol.. II.] 



OLIVE FAMILY. 



White 



i. Fraxinus Americana L. 



Ash. (Fig. 2838.) 



Fra.vinus Americana L. Sp. PI. 1057. 1753- 



A large forest tree, reaching a maximum height 

 of about 130 and a trunk diameter of 6 . Twigs, 

 petioles and rachis of the leaves glabrous; leaf- 

 lets 5-9 (commonly 7), ovate, ovate-lanceolate, 

 oblong or rarely slightly obovate, stalked, entire 

 or denticulate, dark green above, pale or light 

 green and often pubescent beneath, 3 / -5 / long, 

 I /_ 2 / wide, acuminate or acute at the apex, 

 mostly rounded at the base; flowers dioecious 

 (rarely monoecious), the calyx of the pistillate 

 present and persistent; anthers linear-oblong; 

 samara i / -2 / long, its body terete, not margined, 

 winged only from near the summit, one-fourth 

 to one-half the length of the linear-oblong or 

 lanceolate wing. 



In rich woods, Nova Scotia to Minnesota, south to 

 Florida, Kansas and Texas. Wood heavy, hard, 

 strong, brown; weight per cubic foot 41 Ibs. April-June. 



Fraxinus Americana profiinda Bush, Ann. Rep. Mo. Bot Card. 5: 147. 1894. 

 Leaflets densely pubescent beneath; samara 2'-2 l A' long, the wing more decurrent. 

 southern Missouri. Probably a distinct species. 



2. 



Swamps, 



Green 



Fraxinus lanceolata Borck. 

 Ash. (Fig. 2839.) 



Fraxinus lanceolata Borck. Handb. Forst. Bot. i: 



826. 1800. 

 Fraxinus viridis Michx. f. Hist. Arb. Am. 3: 115. 



pi. w. 1813. 



A tree with maximum height of about 65 and 

 trunk diameter of 3, glabrous or very nearly so 

 throughout. Leaflets 5-9, stalked, entire or 

 denticulate, ovate or oblong-lanceolate, acumi- 

 nate or acute at the apex, mostly narrowed at 

 the base, green on both sides, 2 / -6 / long, I'-a' 

 wide; flowers dioecious, the calyx of the pistil- 

 late persistent; anthers linear-oblong; samara 

 i / -2 / long, very similar to that of the preceding 

 species, the usually spatulate and proportion- 

 ately slightly longer wing sometimes decurrent 

 on the sides of the body to below the middle. 



Moist soil, Vermont to the Northwest Territory, 

 Florida, Utah and Arizona. Wood bard, strong, 

 brown; weight per cubic foot 44 Ibs. April-May. 



3. Fraxinus Pennsylvania Marsh. 

 Red Ash. (Fig. 2840.) 



Fraxinus Pennsylvanica Marsh. Arb. Am. 51. 1785. 

 Fraxinus pubescens Lam. Encycl. 2: 548. 1786. 



A tree with maximum height of about 80 and 

 truuk diameter of 4. Twigs, petioles, rachis 

 petiolules and lower surfaces of the leaves vel- 

 vety-pubescent; leaflets 5-9, stalked, ovate, ovate- 

 lanceolate or oblong, acuminate or acute at the 

 apex, mostly narrowed at the base, usually denticu- 

 late, $'-6' long, i / -2 / wide; flowers dioecious, the 

 calyx of the pistillate ones present and persistent; 

 anthers linear-oblong; samara i / -2X / long, its 

 body linear, margined above by the decurrent 

 linear or spatulate wing, and about equalling it. 



In moist soil, New Brunswick to South Dakota, Flor- 

 ida, Alabama, and Missouri. Wood heavj 7 , strong, 

 brown; weight per cubic foot 39 Ibs. April-May. 



