G. 82] CLASSIFICATION AND DESCRIPTION 143 
serrate to almost entire, the lower surface 
as well as the twigs and the catkins to- 
mentose when young. Fruit globular or 
ovoid, usually with a very hard, thick husk 
slightly united at base. Nut somewhat 
hexagonal, with a very thick shell and 
well-flavored kernel. A tall, slender tree, 60 
to 100 ft. high, with a rough, deeply furrow- ZZ 
, ed, but not 
shaggy bark. 
Common on 
dry hillsides 
throughout. 
4. Carya 
microcarpa, C. tomentosa. 
Nutt. (SmaLtu Mocxernut.) Leaflets 
about 5 (5 to 7), oblong-lanceolate, 
long-pointed, finely serrate, smooth, 
glandular beneath; buds small, ovate. 
Fruit small, subglobose, with a thin 
husk; nut not sharply angled, with a 
C. microcdrpa. thin shell; edible. A large tree, 70 to 
90 ft. high; New-York, Pennsylvania, and westward. 
\ 
5. Carya porcina, Nutt. (Pianut. 
Broom-HicKkory.) Leaflets 5 to 7 (usu- 
ally 7), oblong-ovate, acuminate, ser- 
tate, smooth. Fruit pear-shaped to 
oval, somewhat rough, splitting regu- 
larly only about half-way. Nut large 
(14g to 2™ 
in. long), 
brownish, 
somewhat 
obeordate, 
> with a thick, hard shell, and poor, 
bitter kernel. Tall tree, 70 to 80 ft. 
high, with dark-colored heart-wood, 
and rather smooth bark. Common on 
ridges. 
C. porcina. 
6. Carya amara, Nutt. (BITTERNUT. 
SwamMp-HicKory.) Leaflets 7 to 11, lan- 
