JUGLANDACEJE. (WALNUT FAMILY.) 419 
* * Epicarp partly 4-valved : seed thin: bark not scaly. 
4. C. tomentosa, Nutt. (Hickory.) Leaflets 7-9 (mostly 7), large, 
oblong-obovate, acute, pubescent beneath ; sterile aments tomentose ; fruit large, 
globose; epicarp thick, coriaceous, parted nearly to the base; nut thick-shelled, 
oval, somewhat 6-angled. — Rich soil, Florida, and northward. March and 
April. — A large tree with rough bark. 
5. C. glabra, Torr. (Pic-nur.) Leaflets 5-7 (mostly 7), ovate-lanceo- 
late, acuminate, smooth ; fruit obovate, obcordate, or pear-shaped; epicarp thin, 
parted to the middle, coriaceous ; nut thick-shelled, sometimes angled. (C. por- 
cina, Nuit.) — Woods, Florida, and northward. March and April — A large 
tree with smoothish bark. 
6. C. microcarpa, Nutt. Leaflets 5-7, oblong-lanceolate, smooth, glan- 
dular beneath, acuminate; aments smooth; fruit roundish ; epicagp thin; nut 
thin-shelled, slightly 4-angled. — Mountains of North Carolina, and northward. 
April and May.— A large tree. Fruit $' in diameter. 
7. C. myristiceeformis, Michx. “Leaflets 5, ovate-lanceolate, acumi- 
nate, smooth, the terminal one sessile; fruit oval, rugose, rough ; nut oval, 
slightly acuminate, furrowed, very hard." — South Carolina, at Goose Creek, 
Michaux. Berkeley District, Ravenel. Nuts resembling nutmegs. 
8. C. amara, Nuit. (Birrer-novr.) Leaflets 9-11, oblong-lanceolate, 
acute, smoothish ; fruit globular ; epicarp thin, parted to the middle; nut thin- 
shelled, obcordate ; seed much wrinkled. — Low ground, Florida, and north- 
ward. March and April. Á tree of moderate dimensions, with smooth bark, 
and very bitter and astringent seeds. : 
9. C. aquatica, Nutt. Leaflets 9 — 13, lanceolate, acuminate, slightly ser- 
rate, smooth ; fruit roundish, 4-ribbed ; epicarp thin, 4-parted to the base; nut 
compressed, thin-shelled, 4-angled ; seed much wrinkled.— River-swamps, Flor- 
ida to South Carolina. March and April. — A small tree with rough bark. 
Seeds very bitter and astringent. 
2. JUGLANS, L. WALNUT. BUTTERNUT. 
Sterile aments lateral, solitary. Calyx 5-6-parted. Stamens numerous. 
Fertile flowers terminal. Calyx 4-cleft. Petals 4, minute. Stigmas 2, long, 
recurved. Fruit oblong or globose. Epicarp indehiscent. Nut incompletely 
4-celled, furrowed or sculptured. — Trees with naked buds. Leaflets serrate. 
1. J. nigra, L. (Brack Warwvr.) Leaflets 11-21, ovate-lanceolate, 
-pubescent beneath, acuminate, slightly cordate at the base, or obligue; früit 
globose, rough-dotted ; nut furrowed. — Rich woods, Florida, and northward. 
_ March and April. — A tree 30°-50° high. ; 
S J. cinerea, L. (Burrernvz.) Leades 15-19, ovate lanceolate, sente, 
