Order 118.— LAURELS. 295 



1. JUGLANS. Walnut. 



$ Caljx scale-like, 5 or 6-parted, with about 20 stamens. $ Calyx ter- 

 miual, 4-parted, with 4 greenish petals and 3 fringed stigmas. 



1 J. cine'rea. Butternut. White W. Tree 40-50f., with wide-spread branches. Leaflets 



15-17, lanceolate. Fruit oblong-ovoid. Kernel with two great lobes, rich and sweet. 

 The wood is used in ornamental work 



2 J. nigra. Black W. Tree 60-801"., with a tall straight trunk. Leaflets 15-21, lance- 



ovate, subcordate. Fruit globular. Wood dark purple, used in cabinet-work, very 

 valuable. Seed rich in oil. 



2. CAR'YA. Hickory. 



$ Calyx scale-like, 3-parted, with 4 or 5 stamens. ? Calyx 4-cleft ; no 

 petals. Shell smooth and even. Timber very strong. 



* Leaflets 13-15, scythe-shaped. Nut oblong, thin-shelled, very sweet — No. 1 



* Leaflets 7-11. Nut with a tender shell and very bitter kernel. . . .Nos. 2, 3 



* Leaflets 5-9. Nut roundit^h, hard-shelled, sweet and eatable (a) 



a Valves of the epicarp distinct to the base. Bark with loose plates. . . .Nos. 4, f 

 a Valves of the epicarp united below. Bark solid, firm. . Nos. 6-8 

 1 0. olivBefor'mis. Pecan Nut. Tree 60-90f., in river bottoms, W. and S.W. 



2 0. ama'ra. Bitter Nut. Tree 20-40f. Leaflets sharply serrate. Nut white. 



3 0. aquat'ica. Tree 30-40f. Leaflets snbeiitire. Nut reddish. Swamps, S, 



4 C. alba, ShagbarTc. Tree 40-50f. Leaflets 5, the 2 lower smaller. Common. 



5 0. sulca'ta. TMck Shellbark. Tree 40-80f. Leaflets 9-11, the odd one eubsessile. 



Fruit large, oval, 4-furrowed ; nut pointed at both ends, shell thick. 



6 C. tomento'sa. MocTcer Nut. Tree 40-60f. Lf ts. 7-9, rough-downy. Little meat; 



7 O. porci'na. Pignut. Tree 60-lOOf. Leaflets 5-7, smoothish. Fruit somewha 



pear-shaped. 



8 C. microcar'pa. Tree 00-80f. Leaflets 5-7, glabrous. Nut small as a nutmeg. 



Order OXVIIL LAURACE^. Laurels. 



Trees and shrubs aromatic, with alternate, simple, dotted leaves; 

 sepals colored, 4-6, slightly miited, strongly imbricated ; 

 anthers 2 or 4-celled, opening upwards by as many valves; 

 ovary 1-ovnled, becoming a drupe in fruit ; no albumen. 



Analysis of the Genera. 



§ Flowers perfect, the caly.x persistent. Leaves evergreen a 



§ Flowers imperfect. Calyx deciduous. Leaves deciduous b 



a Trees. Lvs. thick, lance-ol-lonjr, Fls. umbeled, S, Baxj Onlk. Per'bea. 



