DIOECIA MONADELPHIA. 447 



HEXANDRIA. 

 406. SMILAX. Rough bind-weed. 



S, rotundifolia : stem prickly, subterete ; leaves unarmed, roundish 

 ovate, short-acuminate ; cordate, 5 7-nerved ; berries spherical. 



HAB. Hedges, &c. June. Stem, climb. ; branch., quadrang. , berries 

 black ; Jl. umbel. 



S. psduncularis : stem terete, climbing ; leaves ovate, nearly round, cor- 

 date, acuminate, 9-nerved ; umbels on very long peduncles. 



HAB. Low grounds. June. Stem climb, by tendrils, 5 8 feet high; 

 leaves smooth ; Jl. fetid. 



OCTANDRIA. 

 407. POPULUS. Poplar. 



P. t remuloides : leaves roundish, abruptly acuminate, dentate-serrate, 



pubescent on the margin. 

 HAB. Woods. April. A middle-sized tree; bark smooth; leaves 



thin, rather small. 

 P. grandidentata : leaves roundish-ovate, acute, with large, unequal, 



sinuate teeth ; younger ones villous. 

 HAB. Woods. April. A middle-sized tree ; young leaves doicny. 



POLYANDRIA. 

 408. MENISPERMUM. Moon-seed. 



M. canadense: leaves peltate, cordate, rounded-angular ; racemes com- 

 pound ; petals 8. 



HAB. Woods and hedges. July, 'Zj- ; climbing ; petiol. long ; racem. 

 axill. ; Jl. small, yell. 



MONADELPHIA. 

 409. JUNIPERIS. Juniper. 



J. communis : leaves ternate, spreading, mucronate, longer than the 



berry. 



5. depressa: stems prostrate. 

 HAB. Dry woods. April May. A low spreading shrub; leaves 



shining above, glauc. beneath. 

 J. virginiana : upper leaves imbricate in four rows, ovate-lanceolate, 



pungently acute, appressed; young ones acerose expanding; trunk 



arboreous. 



39 



