Obdeb 118.— JtrGLANDACB-ffl. 641 



3-J)arted; stamens 4 — 6; anthers hairy. ? Calyx 4-cleft, superior; 

 corolla ; style ; stigma divided, 2-lobed, the lobes bifid ; epicarp 

 4-valved ; nucleus subquadrangular, even. — Large trees, with hard and 

 strong timber. Lfts. few. Both kinds of fls., and the Ivs. from the 

 same bud, the $ terminal. Pith continuous. 



§ Leaflets 13, to 15, ecythe-shaped. Not oblong, thin-shelled, very sivcct No. 1 



§ Lccfiets 7 to 11. Nut with a tender shell and very bitter kernel Nos. 2, 3 



§ Leaflets 5 to 9. — ^Nnt roundish, hard-shelled, sweet and eatable, (*) 



* Valves of the ci»icarp distinct to the base. Bark with loose plates Nos. 4, 5 



* Valves of the e])icarp united below. Bark continuous, firm Nos. 6 — 3 



1 C. olivaeformia Nutt. Pecan-nut (pe-oawn). Lf. with a slender petiole 

 and 13 or 15 lanceolate-falcate lfts., all acuminate, sharply serrate and short pet- 

 iolulate, fr. oblong, 4-angled, valveS distinct ; nut (olive-shapod) oblong, with a 

 thin shell and delicious kernel. — Low, inundated river banks, Ind. (Wabash), lU. 

 to La^ At Terre Haute aro sijccimons £0 to 90f high, with a rough, shaggy bark, 

 the smaller with bark slightly broken. Lfts. seldom less than 1 3, often 15, 5 or 

 6' long, by 1 to 2', decidedly falcate, nearly smooth. The kernel fills the shell, 

 and not being divided by bony partitions, is easily extracted. Its rich flavor is 

 well known. Mar. — May. 



2 C. -amara Nutt. Bitternut. Lfts. aiout 9, ovaie-dblong, acuminate, sTiarph/ 

 serrate, smooth both sides except the pubescent veins and midvein, odd one sub- 

 sessile, the rest sessile ; fr. suhghbous, with the sutures prominent above, valves 

 Tuilf united; nut white, very thin-shelled, smooth, subglobous; kernel bitter. — 

 Grows in most of the U. S., but attains its greatest size in Penn. and along the 

 Ohio valley. Winter bud orange yellow. Tlie nut may be broken by the fingers 

 and contains a kernel so bitter that animals will scarcely touch it. May. 



3 C. aquatica Nutt. Water Bitteknut. Lfts. about 11, lanceolate, oblique, 

 acuminate, subenUre, sessile, the odd one petiolulate, fruit pedwnculate, ovate, sutures 

 prominent; nut small, angular, compressed, with a very tender, reddish sheU and 

 bitter kernel. — Southern States, in swamps and rice-field ditches. Tree 30 to 40f 

 high. Ltta. slightly inequilateral, of a shining rich green both sides, resembling 

 the peach lea£ Pruit wholly unpalatable, and timber of little value. Apr. 



4 C. ^Iba Nutt. Shageakk. Lf. long-petioled, of 5 lfts., the 3 upper oblaneeo- 

 Jate, the 2 lower much smaller, oblong-lanoeolate, the terminal petiolulate, lateral 

 sessile, all subaeuminate, sharply serrulate, downy beneath ; fr. depressed-globular; 

 valves distinct ; nut roundish, compressed, subquadrangular, with a thin shell and 

 large, sweet kernel. — Native from Me. to Wis., S. to Ga. In forests it is very 

 tall, straight and slender, with a rough, shaggy bark consisting externally of long 

 broad plates loosely hanging. Lfts. uniformly 5, the 2 lower deflexed, odd one 

 tapering to a stalk 5 to 8" long. Aments 3 on each stalk, long, slender, pendu- 

 lous. Fertile fls. 2 or 3 together, sessile, terminal. Wood straight-grained, very 

 fertile, heavy, elastic, excellent as timber or fuel, while the frait is of the richest 

 flavor. Apr., May. 



5 C. sulcata Nutt. Thick-shellbaek. Lfts. T or 9, oblanceolate, acuminate, 

 sharply serrate, the odd one subsessile, attenuate to the base ; fr. large, oval, subquad- 

 rangular, 4-farrowed, valves opening to the base ; nut longer than broad, pointed 

 at each end, with a very thick shell and rich-flavored kernel. — Penn. to Ga., rare, 

 but common, W. of the AUeghanies. Tree 40 to 80f high, with a shaggy bark 

 in loose narrow plates. Lfts. often 9, the lower pair smaller, odd ono generally 

 sessile, — a good mark of distinction. Nut usually twice larger than in C. alba, 

 and scarcely less delicious. Mar. — May. 



6 C tomentosa Nutt. Mockeenut. Leaf of 1 or 9 lfts., odd 1ft. petiolulate, 

 the lateral sessile, all oblong-lanceolate, obscurely serrate or entire, rough-downy 

 beheath as well as the thick petiole; aments very slender, hairy; fr. globular or 

 suboval, valves united at base ; nut subhexagonal, with a very thick shell and 

 wen-flavored kernel. — Native throughout the country but more abundant West 

 and South. A large tree 40 to 60f high in woods. Bark thick and rugged, but 

 not scaly. Winter bud large, hard, grayish white. Lvs. strongly resinous-scented. 

 Fruit varying in size from 1' to 2' diam., with a very thick husk, rounded shell, 



41 



