JUGLANDE^E. ' 335 



thers thick, 2-celled** bursting longitudinally. FERTILE FL. 

 with a single or double p.erianth, the outer 4-parted, the-jnner 

 (when present) of 4 pieces. Ovary inferior, 1-celled ; ovule 

 solitary, erect ; styles 1 2, very short of none j stigmas large, 

 eitlier 2 and lacerated, or discoid and 4-lobed. Fruit drupa- 

 ceous, 1-celled, with 4 imperfect partitions. ; Seed 4-lobed ; 

 embryo "larg^; albumen none ; cotyledons fleshy, .2-lobed, 

 wrinkled; radicle superior. 



Trees. Leaves alternate, unequally pinna'te. 



'-;,,; '. ' ~ . . 



1. JUGLANS.- Linn. ' 



Monoecious. STERILE FL. Ament imbricate ; scales 

 mostry 5-parted. Perianth 5 or 6-parted,- Stamens 183*6. 

 FERTILE FL. Perianth double, each 4-parted. Styles 1 or 

 2. Drupe partly spongy ; nut rugose and irregularly furrpw- 

 ed. . Monoecia. Poly.andria. . 



1. J. nigra Linn. : leaves pinnate ; leafets numerous, ovate-lanceo- 

 late, serrate, subcordate, tapering ..to* the summit ; the under surface 

 and petioles slightly pubescent ; fruit-globose,- scabrous, dotted ; nut 

 corrugated. *{'&{. < 



HAB. Fertile woods. N. Y. to Flor. W. to Miss. April, May. 

 Tp. A tree 50 60. feet high. Leaves pinnate, with from 15 21 

 leafets. Sterile amcnts axillary. Timber compact, fine grain- 

 ed, heavy and dark coloured, when exposed to the air. 



Black Walnut. 



2. "J. cinerea Linn. : leaves pinnate ; leafets numercnis, lanceolate, 

 serrate, rounded at the base } soft pubescent beneath ; petioles villous*; 

 fruit oblong- ovate, with a terminal projection, viscid anrd hair,y,- on a 

 long peduncle ; nut oblong, acuminate, conspicuously sculptured. J. 

 cathartica Mich.f. 



HAB. Woods. Cam to Geor. April, May I *>. A large -tree. 

 Leaves pinnate, with 15' 17 pubescent leafets. Habit and fruc- 

 tification very similar to the preceding, but the fruit is oblong, 

 with a protuberant summit, and the nut much more deeply and 

 irregularly sculptured.- Medicinal. Big* Med. Bot. i. 115. 



Butter-nut. Oil-nut. 



2. CARYA. Nutt. 



Monoecious. STERILE FL. Ament imbricated ; scales 3- 

 parted. Perianth none. Stamens 4 6. FERTILE FL. Pe- 

 rianth 4-cleft, superior. Style none. Stigma partly discoid, 

 4-16bed. Pericarp 4-valved. Nut quadrangular, even. 



Monoecia. Polyandria. 



