MONOECIA POLYANDRIA. 441 



HAB. Woods. May. A small tree ; fertile aments loose ; scales fo- 

 liaceous. 



388. OSTRYA. Hop hornbeam. 



0. virginica : leaves ovate-oblong, cordate at the base, acuminate, une- 

 qually serrate ; strobile oblong-ovate, erect ; buds acute. 

 HAB. Woods. A small tree ; cones large, resembling hops. 



389. PLATANUS. Buttonwood. 



P. occidentalis : leaves lobed angular ; branches whitish. 

 HAB. Woods. A very large tree ; leaves very broad ; aments glob., 

 pendulous. 



390. LIQUIDAMBAR. Gum-tree. 



L. styraciflua : leaves palmately lobed ; lobes acuminate, serrate, with 



the sinuses at the base of veins villous. 

 HAB. Woods. A large tree ; leaves 5-lobed, cordate, dark green. 



391. JUGLANS. Walnut. 



J. cinerea : leaflets numerous, lanceolate, serrate, rounded at the base, 

 soft-pubescent beneath ; petioles villous ; fruit oblong-ovate, with a 

 terminal projection, viscid and hairy ; nut oblong, acuminate, deeply 

 and irregularly sculptured. 



HAB. Woods. A large tree ; leaflets 15 17 ; fruit very viscid ; 

 nut edible. 



392. CARYA. Hickory. 



C. alba : leaves 5 7, on long petioles, oblong-lanceolate, acuminate, 

 sharply serrate, villous beneath, the odd one sessile ; aments filiform, 

 smooth ; fruit depressed-globose ; nut compressed. 



HAB Woods. A large tree with scaly bark ; fruit large ; nut white, 

 thin shelled. 



C. sulcata : leaflets generally 9, obovate-lanceolate, acuminate, serrate, 

 pubescent beneath, the odd one subsessile and attenuate at the base ; 

 fruit roundish, 4-angled ; nut subglobose, slightly compressed, conspic- 

 uously mucronate. 



HAB. Mountain woods. A large tree ; nuts large, with very thick 

 pericarps. 



C. porcina: leaflets 7, ovate-lanceolate, acuminate, serrate, smooth on 

 both sides ; fruit oblong or o'bcordate ; nut smooth, very hard. 



HAB. Woods. A large tiee ; leaflets 5 7 ; nuts small, very bitter. 



393. ARUM. Indian Turnip. 



A. triphyllum : stemless ; leaves ternate ; leaflets ovate, acuminate, very 

 entire ; spadix clavate ; spathe ovate, acuminate, convolute below, fla 

 and bent above. 



