LXVII. J^UGLANDA CE^E : CA RYA. 



735 



New England to Florida, in fertile soil in woods. Height 60 ft. to 100 ft. 

 Introduced in 1656. Flowers greenish; April and May. Fruit with a 

 green husk, enclosing a brown nut. 

 Varieties. None are in cultivation ; but a hybrid between this species and 

 /. nigra has been noticed in p. 733. 



The growth of the tree is remarkably quick, more so than that of the Eu- 

 ropean walnut. At 8 or 10 years of age it begins to bear, and age increases 

 its fertility. No tree will grow under its shade, and even grass is injured by 

 it. In 40 years, in good soil, it will attain the height of from 50 ft. to 60 ft. 

 The heart-wood, which is black, remains sound for a long period, -when ex- 

 posed to heat and moisture ; but the sap-wood speedily decays. When pro- 

 perly seasoned, the wood is strong, tough, and not liable to warp or split. It 

 is never attacked by worms, and has a grain sufficiently fine and compact to 

 admit of a beautiful polish. The tree is universally raised from the nut, which, 

 after being imported, ought to be sown immediately, as it seldom retains its 

 \'ital power more than six months after it has ripened. 



J 3. J. cine'rea L. The grey-branched Walnut Tree, or Butlcr-md. 



Identification. Lin. Sp. PI., 1415. ; Willd. Sp. PL, 4. p. 456. ; Pursh .Sept., 2. p. 636. 



Synrinyynes. J. cath&rtica 'Nortli Amer. Sylva, 1. p. IGO 165. t. 31. ; J. obl6nga Mill. Diet. No, 3. ; 



Oil-nut, White Walnut, Amcr. ; Noyer cendre, Fr. ; graue Walnuss, Ger. 

 Engravings. Michx. Arb., 1. 1. 2. ; Michx. North Amer. Sylva, t. 31. ; and our^g-. 1418. 



Spec. Char., Sfc. Petiole vtllous. Leaflet?, in a leaf, 15 17 ; lanceolate, 

 rounded at the base, serrate with shallow teeth ; tomentose beneath ; lateral 

 ones sessile. Fruit oblong-ovate, 

 with a tapered tip, downy, co- 

 vered with viscid matter in small 

 transparent glanded hairs, pen- 

 dulous on a flexible peduncle. 

 Nut oval, with an acuminate 

 tip, very rough with prominent 

 irregular ridges. {Michx.) A 

 large deciduous tree. Canada to 

 Virginia, and on the Alleghany 

 Mountains. Height 30 ft. to 60 ft. 

 Introduced in 1656. Flowers 

 greenish ; April and May. Fruit 

 a green husk, enclosing a brown 

 nut ; ripe in October. 



This species grows with equal 

 rapidity, when young, as the J. 

 nigra ; but the trunk ramifies at a 

 less height; and the branches ex- 

 tending more horizontally than 

 those of most other trees, and 

 spreading widely, a large and flat 



tufted head is formed, which gives ^^^^ ^ ^^^^^_^ 



the tree, in America, more espe- 

 cially in exposed situations, a most remarkable appearance. 



Genus II. 



CA^RY/- Kuttall. The C.\rya, or Hickory Tree. Lin. Si/s!. 

 Monoe'cia Tetr-Hex-andria. 

 Identification. Nutt. GeC, N. Amcr. PI., 2. p. 220. ; Lindley Nat. Syst. of Bot., p. 180. 



