ORDER CXVI. JUG LAND ACE^E. 513 



1-celled, with an erect solitary ovule. Style* 1 — 2, short, or 

 wanting. Stigmas 2, lacerated or discoid, 4-lobed. Fruit 1- 

 celled, with 4 imperfect partitions. Seed 4-lobed. Trees, with 

 alternate, unequally pinnate leaves. 



Genus I— JUG'LAXS. L. 19—12. 

 (Jovis glans, the nut of Jove.) 



Monoecious. Sterile florets ; scales usually 5-parted, imbri- 

 cate ; perianth 5 — 6-parted. Stamens numerous. Fertile flo- 

 rets ; perianth double, each 4-parted. Drupe large, with the 

 nut irregularly furrowed. 



1. J. nigra, (L.) A large tree. Leaflets ovate-lanceolate, numer- 

 ous, serrate, slightly cordate, pubescent beneath when young. Fruit 

 spherical, scabrous, the pulp decaying and turning black. — T ? . April. 

 Rich soils. 30 — 60 feet. . Black-walnut. 



2. J. cine'rea, (L.) A middle-sized tree. Leaflets numerous, lance- 

 olate, pubescent, on villous petioles. Fruit oblong-ovate, acuminate, 

 irregularly grooved. — ^ . April. Fertile soils. 30 — 50 feet. 



Butternut. 



Genus II.— CAR Y' A. Nutt 19—12. 

 (From caryon, a nut.) 



Monoecious. Sterile florets ; ament imbricate ; scales 3- 

 parted : perianth none. Stamens 4 — 6. Fertile florets ; peri- 

 anth 4-cleft, superior. Style none. Stigma 4-lobed. Pericarp 

 4-valved. Nat quadrangular, smooth. 



1. C. sulcata, (Willd.) A large tree. Leaves pinnate; leaflets obo- 

 vate, lanceolate, senate, pubescent beneath, 7 — 9. Sterile aments 

 pendulous, 3-parted ; fertile florets terminal. Nut covered with a thick 

 pericarp. — *? « April. Fertile soils. 60 — 80 feet. 



Thick Shell-bark Hickory. 



2. C. al'ba, (L.) A large tree, with the bark separating in flat scales. 

 Leaves pinnate ; leaflets large, oblong-lanceolate, serrate. Nut nearly 

 spherical, with the pericarp thin. — ^. April. Fertile soils. 40 — 60 

 feet. Shag-bark Hickory. 



3. C. tomento'sa, (Mich.) A large tree. Leaves pinnate ; leaflets ob- 

 ovate-lanceolate, acuminate, slightly serrate, j^ubescent beneath, 7 — 9. 

 Ament tomentose, very long. Fruit sub-globose, smooth, with a thick 

 pericarp. Nut somewhat 6-angled, with a thick, hard shell. — ^ . April 

 —Ma}-. Fertile soils. 40—60 feet. 



Common Hickory. WJiite heart Hickory. 



4. C. ama'ra, (Mich.) A large tree. Leaves pinnate ; leaflets sessile, 

 ovate-oblong, sharply serrate, acuminate, glabrous, except the veins 

 and midrib. Fruit small, bitter, and astringent. — ^. May. Fertile 

 woods. 40—50 feet. Bitter-nut. 



Vae. C. porci'na, (Mich.) A large tree. Leaves pinnate ; leaflets lance- 

 olate, 7 — 9, glabrous. Fruit small, with a hard, smooth nut, very bitter. 

 — T <> . April. Margins of swamps. 70 — 80 feet. Fig-nut Hickoiy. 



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