350 MONOECIA.— POLYANDRIA. 



one subsessile and attenuate at the base; fruit 



roundish, 4-angled ; nut subglobose, slightly con> 



pressed, conspicuously mucronate. 

 HAB. Mountain woods. A large tree; nuts large, 



with very thick pericarps. 

 4. C. amara : leaflets, generally 9, ovate-oblong, aru- 



minate, acutely serrate, smooth on both sides : 



fruit subglobose ; nut smooth, mucronate, with 



the shell fragile. 

 HAB. Dry woods. A large tree; nerves of the I eav. 



pubes. beneath : nuts bUler. 

 3. C. porcina : leaflets 7, ovate-lanceolate, ;icuminate. 



serrate, smooth on both sides ; fruit oblong, or 



obcordate ; nut smooth, ver\ hard 

 HAB. Woods. A large tret ; leofi. 5 — 7 ; nuts 



small, very bitter. 



561. ARUM. Wake-robin. Aroidece. 



). A. draconiium : sternless ; leaves p«*date ; leaflets 



lanceolate-oblong, entire. ; spadix ;»ubulate-filiform. 



longer than the oblong convolutp spathe. 

 HAB. River bunks. June — July. U. Petiole 



12 — 18 in. long; leav. large; spath. short. 

 2. A. triphyllum : sternless ; leaves ternate ; leaflets 



ovate, acuminate, very entire; spadix clavate ; 



spathe ovate, acuminate, convolute below, flat and 



bent above. 

 HAB. Wet shady places. Ma\ — June. U . Root 



tub. acrid; spath. green or purp. ; berry red, 



562. LE.CONTIA.* Aroidece. 



L. virginica : 



HAB Swamps. July. U. Leav. petiol., oblong, 

 hastate-cordate, with the lobes obtuse; spathe lanceo- 

 late, involute ; harder undul. ; spad. slender. 



563. CALLA. Water arum. Aroidece. 



i "I. pahistris : leaves cordate ; spathe flat ; spadix co- 

 vered with perfect flowers. 



s A- new genus, separated from Arum by W. Cooper, Esq. 



