Genus 2. 



OLIVE FAMILY. 



/-:> 



Samaras narrowly spatulate ; leaves thin, serrate or entire. 

 Samara-body compressed ; leaflets entire. 

 Body of the samara fiat, the wing extending all around it. 

 Twigs terete ; leaflets 5-7 ; samara elliptic or spatulate. 

 Twigs 4-sided; leaflets 7-1 1 ; samara oblong or cuneate. 

 Lateral leaflets sessile ; calyx none ; samara winged all around. 



I. Fraxinus americana L. White Ash. 

 Cane Ash. Fig. 3314. 



Fraxinus 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; leaflets 5-9 (commonly 7), ovate, 

 ovate-lanceolate, oblong or rarely slightly obo- 

 vate, 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 1'-?' 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 Ontario, Minne- 

 sota, Florida. Kansas and Texas. Wood hea\T, 

 hard, strong, brown ; weight per cubic foot 41 lbs. 

 April-June. 



5. F. fcnnsylvanica. 



6. F.proftinda. 



7. F. caroliniana. 



8. F. quadrangulata. 



9. F. nigra. 



2. Fraxinus biltmoreana Beadle. Bilt- 

 more Ash. Fig. 3315. 



F. biltmoreana Beadle, Bot. Gaz. 25: 358. 1898. 



Similar to Fraxinus americana, becoming at 

 least 60 high, but the young twigs, petioles 

 and leaf-rachis densely pubescent or tomentose. 

 Leaflets 7-9, stalked, ovate to oblong-lanceo- 

 late, entire-margined, or obscurely dentate, 

 dark green and somewhat shining above, pale 

 and more or less pubescent beneath; samara 

 i'i-2' long, the narrow terminal wing 2-4 times 

 as long as the oblong nearly terete plump body 

 and but little decurrent upon it. 



Woodlands and river-banks, Pennsylvania to 

 Georgia. April-May. 



3. Fraxinus Darlingtonii Ijritton. DarUng- 

 ton's.Ash. Fig. 3316. 



F. Darlingtonii Britton, Man. 725. 1901. 



A tree, attaining a height of 70 or more, the 

 twigs smooth or velvety, the twigs sometimes 

 remaining velvety until the close of the growing 

 season. Leaflets 5-7, ovate to oblong-ovate, usu- 

 ally denticulate, glabrous, or pubescent beneath, 

 stalked, acute or acuminate, 3' long or less; 

 samara narrowly linear, not spatulate, 2'-3' long, 

 about 2" wide, the narrow wing decurrent on the 

 slender, terete, seed-bearing part only to about 

 its middle. 



Hillsides, river-hanks and wet woods, Massachu- 

 setts to New York, Alabama and Louisiana. Wood 

 hard, brown, strong. April-June. 



