SYNGENES. NECESS. 1588. Silphium. 



U73 



laciniatum. 

 compo/ttum. 



therebinthi- 

 naceum. 



^erfoliatum. 



co'nnatum* 



ABerifcus* 



pumilum. 



integrifo- 

 Hum. 



trifoliatum. 



tematum. 



AlrcpurpH. 

 rtum. 



1588. SILPHIUM. Receptacle chaffV \ feeds crown- 

 ed with a 2-awned margin : calyx fpreading 

 every way. 



Root and ftem-leaves pinnatifid : ftem hairy. 



America. Linn. fil. fafc. 1. p. $. tab. 3. Calyx fpinous. 



Sterrt-leaves finuate pinnatifid ; radical-ones ferrate> finuate 

 in many divifions : ftem fmooth. 

 Carolina. Mich, Amer % 2. p. 145* 



Leaves alternate, ovate, ferrate, rough ; radical-ones 

 hearted. 

 North America. Jacq. hort. t. p \b*tab % 43. 



Leaves oppofite, deltoid, petioled, perfoliate : ftem 3-fided, 

 fmooth. 

 North America. Leaves ferrate : calyx obtufe. 



Leaves oppofite, feftile, perfoliate : ftem cylindrical, rough. 

 North America. Leaves with a concave diik, rough. 



Leaves oppofite or alternate, feftile, oblong, hairy ; lower- 

 ones ferrate : ftem cylindrical, briftly. 

 Virginia, Carolina. Dill. Elth.t. 37./*. 42. 



Leaves oval, obtufe, lightly toothed, fomewhat downy : 

 ftem clothed with light down. 

 Florida. Michaux. Amer.z. p. 146. 



Leaves oblong, oppofite, feftile, very entire, rough : ftem 

 4'fided, rough. 

 North America. Michaux. Amer.z. p 146. 



Stems 6-angled : leaves in threes, ovate, toothed : panicle 

 trichotomous. 

 Carolina. Moris, feet, 6. /. 3./, 68. Leaves rough. 



Stems cylindrical : leaves in threes, (lightly denticulate : 

 panicle forked. 

 North America. Willi 3. p. 2333. Lower and upper-leaves 

 fcattered, middle-ones 3 in a whorl, thofe of the panicie in 

 pairs and feftile. 



Stems cylindrical : upper-leaves in fours, denticulate : 

 panicle forked. 

 North America, Willi 3. />. 2334. Lowest leaves alternate, 

 the next in threes, upper-ones in fours, uppermoU fcattered : 

 petioles ciliate. 



VOL.VI.—E^ 



