OLEACEAE (OLIVE FAMILY) 



651 



. F. atnericana. 

 Fruit x %. 



847. F. pennsylvanica. 

 Fruit x %. 



neath, entire or sparingly serrate or denticulate ; fruit 2.5-5 cm. long, margin- 

 less below, abruptly dilated into a lanceolate, oblanceolate, or wedge-linear wing 

 2-3 times as long as the cylindraceous body (1.3-2 cm. long, 

 . a 3-4 mm. thick). Rich or moist woods, N. S. to Ont., and 



southw. Apr., May. A large and very valuable forest tree, 

 with gray furrowed bark, smooth gray branchlets, and rust- 

 colored buds. Monoecious flowers rarely occur. FIG. 846. 



2. F. b il t more ana Beadle. Branchlets, petioles, etc., pubes- 

 cent or tomentose ; leaflets 7-9, lanceolate, acuminate, decidedly 

 paler and sparingly pubescent beneath ; fruit linear-oblong, 

 scarcely narrowed to the rounded apex, the body short and 

 stout (1-1.4 cm. long, 4-5 mm. thick). Pa. to Ga. 



3. F. pennsylvanica Marsh. (RED A.) 

 Branchlets and petioles velvety-pubescent, 

 leaflets 5-9, ovate or oblong-lanceolate, taper- 

 pointed, almost entire, pale or more or less 

 pubescent beneath ; fruit 2.5-7 cm. long, 

 the edges gradually dilated into the linear 

 or spatulate icing, the body 1.4-2 cm. long, 

 2-3 mm. thick. (F. pubescens Lam., in- 

 cluding the narrowest-fruited form, F. Dar- 

 lingtonii Britton.) Low ground, Me. to 

 Dak., and southw. Tree of middle or 

 large size ; inner face of outer bark of the 

 branches red or cinnamon-color when fresh. 



FIG. 847. Passing to 



Var. lanceolata (Borkh.) Sarg. (GREEN A.) Glabrous 

 throughout; leaflets often wedge-shaped at the base and serrate above, bright 

 green both sides. (F. viridis Michx. f.) Along streams, Me. to Sask., and 

 southw. 



t-f -w Fruit with aflattish body passing insensibly into the wing. 

 4. F. profunda Bush. (PUMPKIN A.) Terete branchlets velvety-pubescent, 

 as are the petioles, rhachises, etc. ; leaflets 7-9, ovate-lanceolate, long-petiolulate, 

 subentire ; fruit linear-oblong, rounded or retuse at the apex, 

 somewhat narrowed to the thickish base but without distinctly 

 limited body. River-swamps, etc., w. N. Y. to Mo., and 

 southw. 



5. F. caroliniana Mill. (WATER A.) Branchlets terete, 

 glabrous or pubescent ; leaflets 5-7, ovate or oblong, acute at 

 both ends, short-stalked ; fruit broadly winged (not rarely 

 3-winged), elliptic or oblanceolate, acutish at apex, with a 

 tapering base. (F. platycarpa Michx.) River-swamps, Va. 

 to Fla., La., and Mo. March. Tree of middle size. FIG. 848. 



- H- Calyx wanting or a mere disk-like ring. 



6. F. quadrangulata Michx. (BLUE A.) Branchlets square 

 (at least on vigorous shoots), glabrous; leaflets 7-11, short- 

 stalked, oblong-ovate or lanceolate, pointed, sharply serrate, 



848. F. caroliniana. g reen both sides ; fruit oblong, blunt, and of the same width 



' Fruit x %. " at th ends, or slightly narrowed at the base, often notched 



at the apex, 2.5-5 cm. long, 6-15 mm. wide. Dry or moist 



rich woods, O. to Mich, and Minn., Ala., Ark., etc. Large timber-tree, the 



inner bark yielding a blue color to water. 



* * Lateral leaflets sessile ; anthers short-oblong ; flowers wholly naked. 



7. F. nigra Marsh. (BLACK A.) Branchlets and petioles glabrous ; leaflets 

 7-11, oblong-lanceolate, tapering to a point, serrate, obtuse or rounded at the 

 base, green and smooth both sides, when young with some rusty hairs along 

 the midrib ; fruit linear-oblong or narrowly elliptical, blunt at both ends. {F. 

 &ambucifolia Lam.) Swamps and wet banks, Nfd. to Man., Del., Va., and 



