57 8 
connatum. 
Asteriscus . 
pumilum. 
integri folium. 
Icevigatum. 
trifoliatum. 
ternatum. 
{ 
SYNGENESIA NECESSARIA. Silphium. 
1/. July — -Oct. v. v. A tall robust plant. Var. j 6. 
though considered by Willdenow as a distinct species, 
appears to be little more than a variety. 
5. S. caule tereti hispido, foliis oppositis connatis remote 
serratis scabris,— Willd. sp. pl. 3. p. 2332. 
In high mountains of Virginia and Carolina. 1/ . Aug. 
Sept. v. u. Resembles the preceding, but is a very 
distinct species. 
6. S. caule tereti hispido, foliis oppositis alternisve oblongis 
acutis serratis scabris, calycibus ciliatis. — IVilld. sp . 
pl. 3. p. 2332. 
Icon. DHL elth. t. 37. f 42. 
In mountain meadows : Virginia and Carolina. 1/ . 
July — Sept. v. v. 
7 . S. caule tenuiter tomentoso, foliis ovalibus leviter serra- 
tis obtusis subtomentosis, calycinis foliolis obovatis ob- 
tusis, seminibus muticis. — Willd. sp. pl. 3 .p. 2332. 
S. patulum. Herb. Banks. 
In Florida. Michaux. Bartram. If., v.s.in Herb. 
Banks. 
8. S. caule tetragono aspero, foliis oppositis sessilibus ob- 
longis integerrimis scabris, Roribus paucis breviter 
pedunculatis — IVilld. sp. pl. 3. p. 2333. 
On the most western of the Allegany mountains and 
Illinois. 1 1 . Aug. — Oct. v. v. About four feet high. 
9. S. caule simplici tetragono sulcato glabro, foliis oppositis 
sessilibus ovatis acuminatis tenuissime serratis basi 
subcordatis utrinque glabris, calycinis squamis ovatis 
ciliatis. 
In Georgia. Enslen. 1/. v. s. in Herb. Enslen. About 
two feet high , flowers in a close corymb. 
10. S. caule sexangulo laevi, foliis terno-verticillatis ovato- 
ianceolatis inaequaliter dentato-serratis scabris, supe- 
rioribus sessilibus, panicula trichotoma. — IVilld. sp. 
pl. 3. p. 2333. 
S. ternifolium. Mich.Jl. amer. 2. p. 140. 
Icon. Moris, hist. 3. s. 6 t. 3 ./. 68. 
On the high mountains of Virginia and Carolina. I/. 
Sept. Oct. v. v. About six feet high. 
1 1 . S. caule tereti laevi, foliis terno-verticillatis petiolatis lan- 
ceolatis subdenticulatis scabriuscuiis basi ciliatis, su- 
perioribus sparsis sessilibus, panicula dichotoma, ca- 
lycibus ciliatis. — IVilld. sp. pl. 3. p. 2333, 
