SYNGENESIA iEQUALIS. 
30 < 
minatis, dentatis, sub- 
tus pubescentibus,glan- 
duloso punctatis. E. 
nate, toothed, pubes- 
cent underneath, dotted 
with glands. 
E. Trifoliatum. Sp. pi. 3. p. 1 756. Walt. p. 199* Pursh, 2. p. 516. 
Nutt. 2. p. 135. 
Stem three to four.feet high, striate, pubescent, solid. Leaves generally 
ternate, on petioles about an inch long, ovate or oval, but always acuminate, 
obtuse at base, thinly sprinkled with hairs on the upper surface, pubescent 
and almost covered with glandular dots on the under. Flowers in large ter- 
minal corymbs. Involucrum about fifteen-leaved, imbricate, the interior 
leaves linear-lanceolate, long, nerved, slightly pubescent, the exterior short, 
nearly ovate, more pubescent, all membranaceous or scarious, and adhering 
very slightly to the receptacle. Corolla tinged with purple. Style much 
longer than the corolla, deeply two-cleft, stigmas linear. Seed angled. Pap- 
pus filiform. 
The species I have described above is certainly distinct, and is probably 
the real plant of Gronovius, “ foliis ternis,” Flor. Virg. p. but I have 
among my specimens one with ternate leaves, which most probably belongs 
to E. Verticillatum, and from such a specimen the phrase u utrinque attenu- 
ate, ” which Willdenow and Pursh apply to this species, has possibly been 
derived. 
Grows in damp soils; rare in the low country of Carolina, 
Flowers September — October. 
24 . PlJRPUREUM. 
E. foliis petiolatis, 
quaternis quinisve, o- 
vali lanceolatis, serra- 
tis, rugoso-venosis, 
scabriusculis; caule fis- 
tuloso. 
Leaves on petioles, 
by fours or fives, oval 
lanceolate, serrate, ru- 
gose, veined, slightly 
scabrous; stem hollow. 
Sp. pi. 3. p. 1759. Mich, 2. p. 99. Pursh, 2. p. 515. 
Stem four to seven feet high, nearly glabrous, tinged with purple, hollow. 
Leaves four to six, in a whorl, oval-lanceolate, serrate, nearly glabrous on 
the upper surface, underneath reticulately veined, somewhat pubescent and . 
sprinkled with glandular dots, tapering at base to a petiole about an inch 
long, sometimes tinged with purple. Involucrum generally five-flowered, 
very similar to that of the preceding species, but less pubescent. Corolla 
pale purple. Style , Stigma and Seed similar to those of the preceding 
species. 
Grows in wet soils. 
Flowers September. 
