/ 



^22 



MONOECIA POLYANDRIA. 



I 



I 



■ 



Foemineu Calyx 4- 

 fidus, superus. Corolla 

 -fida. Styli2, Dru/pa 

 coriacea, siib-spongio- 



Fertite florets. 



Ca 



sa. 



li/x 4-cIeit. Styles 2. 

 Drupe coriaceous, 

 somewhat spongy. N^ut 

 rugose, irregularly fur- 

 rowed. 



Leaves numerous 



i 



ovate lanceolate 



9 



ser- 



rate 



Nux rugosa irre- 

 gulariterque sulcata, 



1. Nigra. 



J. foliolis numerosis, 

 ovato-Ianceolatis, ser- 

 ratis, subcordatis, su- 

 per ne august at is, sub- 

 tus petiolisque sub-pu- 

 bescentibiis; fructibus 

 globosis, scabro-punc- 

 tatis. 



Sp. pi. 4. p. 456. Walt. p. 235. Mich. 2. p. 191 

 Niitt. 2. p. 220. 



Icon. Mich. arb. for. 1. p. 157> 



A large tree growing 50—60 feet in height, and 2-4 in diameter, with a 

 large and spreading head when permitted to expand freely. Leaves ^'^^^' 



21) ovate lanceolate, somewhat 



slightly cordate, 

 tapering to the summit, 

 the under surface and 



petioles slightly pube- 



globular, 



scent; 



fr u it 



scabrous, dotted. 



Pursh, 



P 



636. 



nate, pinnate, the leaflets numerous, (15 — ^^^ ^,^ ' • u u 



cordate or unequal at base, the partial petioles very short, and with the un 



;4ff?en<s of sterile flowers 



axillary near the termination of the last year's wood, simple, two or tnre 



Jnr-lics Irmrr- Cort't^o Hr^rata toKrY^;^'.! 1?m,U oi-itioi-i»>a1 rnVpred with a tlllCK 



derside of the leaves very pubescent when yonng. 



inches long; fertile florets terminal- Fntit spherical, covered 



spongy undivided pericarp, externally dotted and scabrous, which deca) 



after heavy frosts, and exposes the black corrugated nut. j ^ k 



The timber of the black walnut is compact, fine grained, heavy and darK 

 coloured when exposed to the air- It is now much valued; and were it n 

 for the facility with which mahogany is obtained, it would form a great po 

 tion of the furniture of our houses. The fruit is well tasted, and ^xs ve y 

 commonly introduced on our tables, . • ^d 



This tree grows only in the richest soils- It is sparingly dissemmar^^ 

 along the sea-coastj more frequent, I believe, in the vallies near the o 

 tains. 



Flowers April- 



2. CiNEREA. Lin. 



J. foliis numerosis, I Leaves 

 lanccolatis, serratis, | lanceolate. 



numerous, 

 serrate, 



I 



