578 SYNGENESIA NECESSARIA. Silphium. 



■2/ . /illy — Oct. V. V. A tall robust plant. Var. /3. 

 though considered by Vv'^illdenow as a disiinct species, 

 appears to be little more than a variety, 

 connalum. 5. S. caule tereti hispido, folils oppositis connatis remote 



serratis scabris. — WiUd. sp. pi. 3. p. 23o'2. 

 In high mountains of Virginia and Carolina, l/ . Aug. 

 Sept. V. V. Resembles the preceding, but is a very 

 distinct species. 



Asteriscus. 6. S. caule teruti hispido, foliis opposite' nlternisve oblongis 

 acutis serratis scabris, calycibus ciliatis. — IViUd. sp. 

 pi. 3. p. 2332. 



Icon. Dill. elth. t. 37-/ 42. 



Jn mountain meadows : Virginia and Carolina. "3/ . 

 July — Sept. V. V. 



pumilum. 7. S. caule tenuiter tomentoso, foliis ovalihus leviter serra- 



tis obtusis Eubtomentosis, calycinis foliolisobovatis ob- 

 tusis, semiiiibus muticis. — IP illd. sp. pL 3. p. 2332. 



8. patukim. Herb. Banks. 



In Florida. Michaux. Bar tram. 2/ . v. s. in Herb. 

 Banks. 

 integrifoUum. 8. S. caule tetragono aspero, foliis oppositis sessilibus ob- 

 longis integerrimis scabris, floribus paucis breviter 

 pednnculatis —IVilld. sp. pi. 3. p. 2333. 



On the most western of the Allegany mountains and 

 Illinois. 11 . Aug. — Oct. v. v. About four feet high. 



Icevigatum. g. S. caule simplici tetragono sulcato glabro, foliis oppositis 

 sessilibus ovatis acumitiatis tenuissime serratis basi 

 subcordatis utrinque glaDris, calycinis squamis ovatis 

 ciliatis. 



In Georgia. Enslen. 1/ . v. s. in Herb. Enslen. About 

 two feet high ; flowers in a close corymb. 

 trifoliatum. 10. S. caule sexangulo laevi, foliis terno-verticillatis ovato- 

 lanceolatis inaequaliter denrato-serratis scabris, supe- 

 rioribus sessilibus, panicula trichotoma. — Willd. sp. 

 pi. 3. p. 2333. 



8. ternifolium. Mlch.Ji amir. 2. p. 146. 



Icon. Moris, hist. 3. s. 6 t. 3./. 68. 



On the high mountains of Virginia and Carolina. "2/. 

 Sept. Oct. V. V. About six feet high. 



ternatum. U.S. caule tereti l^vi, foliis ternn-verticillatis petiolatis laq- 

 ct-oldtis subdenticidatis scabriusculis basi ciliatis, su- 

 perioribus sparsis sessilibus, panicula dichotoma, ca- 

 lycibus ciliatis.— i^/^i/R sp. pi. 3. p. 2333. 



