OLEACEAE (OLIVE FAMILY) 



651 



m 



846, F. americana. 

 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 oylindraceous body (1.3-2 cm. long. 

 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. Pig. 846. 



2. P. biltmoreHna Beadle. Branchlets, petioles, eic, 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. P. pennsylv4nica Marsh. (Eed A.) 

 Branchlets and petioles velvety-pubescent ; 

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

 pointed, almost entire, pale or more or less 

 pubescent beneath ; jfruit 2.5-7 cm. long, 

 the edges gradually dilated into the linear 

 or spatulate %iiing, the body 1.4-2 cm. long, 

 2-3 mm. thick, (i^. 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. 



Pig. 847. Passing to 



"Var. lanceolkta (Borkh.) Sarg. (Green A.) Glabrous 

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

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

 southw. 



■M- ++ Fruit with ajlattish body passing insensibly into the wing. 



4. P. profunda Bush. (Pdmpkin 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. P. earolinilLna 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 Pla., La., and Mo. March. — Tree of middle size. Pig. 848. 



*- -1- Calyx wanting or a mere disk-like ring. 



6. P. quadrangulata Michx. (Blue A.) Branchlets square 

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

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

 green both sides ; fruit oblong, blunt, and of the same width 

 at both 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, 0. 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. P. nigra Marsh. (Black A.) Branchlets and petioles glabrous ; leaflets 

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

 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. i^F. 

 sambucifolia Lam.) — Swamps and wet banks, Nfd. to Man., Del., Va., and 



848. F. earoliniana. 

 Fruit X %. 



