410 SYNGENESIA ^EQUALIS. 



and toinentose beneath; segments 2-lobed, spinous; calyx subgl> 



hose ; scales appressed, with rcflexed points. 

 HAB. Thickets. July Sept. $ ; stem 3 5 feet high, much 



branch. ; Jlower reddish-purple. 

 C. glutinosus : leaves pinnatifid, with divaricate segments ; calyj 



ovate, with unarmed glutinous scales. 

 HAB. Damp soils. Aug. Sept. tf; stem 4 -6 feet high; Jlow. 



small, purple ; calyx webbed. 



333. LIATRIS. 



L. scariosa : stem erect, hairy ; leaves lanceolate, pubescent, scabrous 

 along the margin ; raceme long ; calyx 14-flowered ; scales obo- 

 vate, nearly smooth, with the margin scarious ; the lower ones 

 spreading. 



HAB. Sandy hills and woods. Sept. Ij. ; stem 3 4 feet high ;Jlow- 

 ers num., large. 



334. VERNONIA. 



V. novcboracensis : leaves numerous, lanceolate, scabrous, serrulate, 

 corymb fastigiate ; scales of the calyx filiform at the extremity. 



HAB. Low grounds. Aug. Oct. Ij. ; stem 4 6 feet high ; flow- 

 ers large, purp. 



335. EUPATORIUM. Thoroughwort. 



* Calyx 3 b-Jlowered. 



E. sessilifolium . leaves sessile, amplexicaul, distinct, ovate-lanceolate, 

 rounded at the base, very smooth ; stem smooth. 



HAB. Rocky woods. Aug. Sept. 7J. ; stem 2 feet high; leaves 

 large ; Jl. wh. 



E. teucrifolium : leaves sessile, distinct, ovate, scabrous, coarsely ser- 

 rate at the base ; uppermost ones entire. 



HAB. Low grounds. Aug. Sept. 7J.; stem 2 feet high; leaves 

 subamplex. ; Jl. ich. 



* * Calyx more than 5-Jlowered. 



E. purpureum: leaves petiolate by fours or fives, ovate-lanceolate, 



serrate, rugosely veined, slightly scabrous ; stem hollow. 

 HAB. Low grounds. Aug. Sept. 7| ; stem 56 feet high, purp 



Jl. purp. ; cal. S-leav. 

 E. macuJatum: leaves petiolate, by fours or fives, ovate-lanceolate 



unequally serrate, pubescent beneath ; stem solid, sulcate. 

 HAB. Low grounds. Aug. Sept. *2J.; stem 4 5 feet high, punct 



cal. 58-Jl. 

 E. Terticillatum : leaves petiolate, by threes or fours, ovate-lanceolate, 



acuminate at each end, unequally serrate, nearly smooth; stern 



solid. 

 HAB. Wet woods. Aug. Sept. Tj.; stem 34 feet high, slend. 



cal. wh. ; Jl. purp. 

 E. perfoliatum : leaves connate-per foliate, pubescent. 



