JUGLANDACEAE. 325 



linear, twice as long as the lateral ones; fruit oblong, 5-8 cm. long; husk thick, 

 soon splitting to the base; nut oblong, somewhat compressed, thick-shelled, pointed 

 at both ends, yellowish white. In rich soil, N. Y. and Perm, to Ind., Iowa, Tenn., 

 Kans. and the Ind. Terr. May. Fruit ripe Sept. -Oct. [Carya sulcata Nutt.] 



7 Hicoria alba (L.) Britton. White-heart Hickory. Mocker-nut. (I. F. 

 f. 1 156.) A large tree, the foliage and twigs persistently tomentose-stellate- 

 pubescent, fragrant when crushed; bark close; bud-scales large; leaflets 7-9, oblong- 

 lanceolate or the upper oblanceolate or obovate, long-acuminate; middle lobe of the 

 staminate calyx linear, much longer than the lateral ones; fruit globose or oblong- 

 globose, 3-9 cm. long; husk thick; nut grayish-white, angled, pointed at the sum- 

 mit, little compressed, thick-shelled, 4-celled at the base. In rich soil, Mass. to 

 Ont.,111., Neb., Fla. and Tex. May-June. Fruit ripe Oct. -Nov. [C. tomentosa Nutt.] 



8. Hicoria pallida Ashe. Pale-leaved Hickory. A forest tree with very 

 rough gray bark and purple-brown twigs, the buds sharp-pointed, their scales 5-9. 

 Leaflets 7-9, lanceolate or ovate-lanceolate, long-acuminate, glabrous or nearly so 

 when old, pale and with numerous silvery scales beneath, the rachis stellate-pubes- 

 cent, at least when young; middle lobe of the staminate calyx linear, somewhat 

 longer than the lateral ones; fruit usually subglobose, sometimes oval or pyriform, 

 the husk rather thin, sometimes tardily splitting; nut laterally flattened, 4-celled at 

 the base. In dry soil, S. Va. to Tenn., Ga. and Ala. April-May. (H. villosa 

 pallida Ashe.) 



9. Hicoria microcarpa (Nutt.) Britton. Small-fruited Hickory. (I. F. f. 

 1 157.) A forest tree, the older bark separating in narrow plates, the foliage gla- 

 brous. Bud-scales 6-8; leaflets 5-7, oblong, or ovate-lanceolate, acuminate at the 

 apex, 9-13 cm. long ; staminate aments glabrous; middle lobe of the staminate 

 calyx equalling or somewhat longer than the lateral ones; fruit globose or globose- 

 oblong, less than 2.5 cm. long, the husk thin, tardily and incompletely splitting to 

 the base; nut subglobose, slightly compressed, thin-shelled, pointed ; seed sweet. In 

 rich woods, Mass. to Mich., Va., 111. and Mo. May-June. Fruit ripe Sept.-Oct. 



10. Hicoria borealis Ashe. Northern Hickory. (I. F. f. 1156b.) A 

 small tree, with rough furrowed bark when young, becoming shaggy in narrow 

 strips with age. Bud-scales 8-10, imbricated, the inner bright-colored and seri- 

 ceous; terminal bud ovoid-lanceolate; twigs slender, glabrous, bright brownish 

 red; middle lobe of staminate calyx much prolonged; young leaves blackening in 

 drying, ciliate, with few resinous globules on lower surface; leaflets 5, occasionally 

 3, lanceolate, the upper 9-15 cm. long; fruit ovoid, much flattened, 1.5 cm. long 

 or more; husk very thin, rugose, coriaceous, usually not splitting; shell thin and 

 elastic; seed large, sweet and edible. A small tree of dry uplands, growing with 

 oaks and H. microcarpa. Mich., Detroit river. Probably also in S. Ont. 



11. Hicoria glabra (Mill.) Britton. Pig-nut Hickory, (I. F. f. 1158.) 

 A tree, the bark close, rough; foliage glabrous, or slightly pubescent. Bud- 

 scales 8-10, imbricated, the inner ones enlarging; leaflets 3-7, rarely 9, oblong, 

 oblong-lanceolate or the upper obovate, sessile, acuminate at the apex, mostly 

 narrowed at the base, 7-15 cm. long, in young plants much larger; staminate 

 aments glabrous, peduncled in 3's; lobes of the staminate calyx about equal in 

 length, the middle one narrower; fruit obovoid or obovoid-oblong, 3.5-5 cm. long; 

 husk thin, the valves very tardily dehiscent; nut brown, angled, pointed, very 

 thick-shelled; seed astringent and bitter, not edible. In dry or moist woods, Me. 

 to Ont., Minn., Fla., Kans. and Tex. Fruit ripe Oct. -Nov. 



Hicoria glabra hirsuta Ashe. Similar to type, but leaves larger, pubescent beneath, 

 thinner, generally destitute of resinous globules on the lower surface; fruit larger. Va. 

 to Ga. 



12. Hicoria villosa (Sarg.) Ashe. Scurfy Hickory. Woolly Pig-nut. 

 «L F. f. 1156a.) A small or medium sized tree, with deeply furrowed dark gray 

 bark. Buds of 6-8 imbricated scales, the outer usually thickly dotted with resinous 

 globules; lateral buds mostly short-stiped; staminate aments pubescent, and gland 

 and scurf covered ; twigs usually glabrous, bright purple-brown; petiole pubescent; 

 leaflets 5-9, at first thickly covered beneath with silvery peltate glands, mixed with 

 resinous globules, generally pubescent; fruit about 2.5 cm. long, obovoid. the husk 

 partly splitting; nut brown, thick-shelled, angled; seed small, but sweet. Mo. 



