SYNGENEStA FRUSTRANEA. 
417 
Root perennial. Stem about two feet high, slender, simple, sometimes 
divided at the base, glabrous. Leaves all opposite, abruptly rounded at 
base, triplinerved, paler underneath. Flowers few, small, terminal. Pe- 
duncles or small branches generally opposite. Leaves of the involucrum 
about as long as the disk, somewhat hispid on the inner surface. Florets of 
the ray ten to twelve, narrow, scarcely an inch long; of the disk not numer- 
ous, yellowish. Pappus subulate. Chaff of the receptacle undivided, pu- 
bescent, and fringed along the summit. 
Sent to me under this name by Dr. Schweinitz from Salem, North-Caro- 
lina. Found abundantly in the western districts of Georgia. The latter 
rather more hispid and rough than my specimens from North-Carolina; in 
all other respects exactly similar* 
Flowers August— -October* 
5. Longifolius. Pursh. 
H. glaberrimus; cau- 
le paniculato, ramis 
summitate paucifloris; 
foliis subsessilibus lon- 
gissime-lanceolatis, tri- 
plinervibus, integerri- 
mis, inferioribus serra- 
tis; involucri squamis 
ovatis, acutis, exteri- 
oribus linearibus, diva- 
ricatis. 
Very glabrous; stem 
paniculate, the branch- 
es bearing a few flow- 
ers at the summit; 
leaves nearly sessile, 
very long, lanceolate, 
triplinerved, entire, the 
lower serrate; scales 
of the involucrum o- 
vate, acute, the exte- 
rior linear, divaricate. 
Pursh, 2. p. 571- 
Perennial. Stem three to four feet high, (four to seven, Pursh,) very 
glabrous, tinged with purple. Leaves six to eight inches long, four to six 
lines wide, glabrous, obscurely triplinerved, generally entire, tapering to- 
wards the base, yet finally connate, forming a short sheath; near the root 
numerous, along the stem very distant. Flowers in a small terminal co- 
rymb, the branches alternate. Scales of the involucrum ovate-lanceolate, 
nearly glabrous. Florets of the ray about ten, small for this genus. Pap- 
pus subulate, caducous. Scales of the receptacle lanceolate, concave, con- 
spicuously three-toothed. 
This species, which agrees in habitat and character with the H. Longifo- 
lius of Pursh, is certainly remarkable. It has all the artificial, and I believe, 
essential characters of Helianthus, with the aspect of an aquatic Coreopsis. 
Grows in damp rich soils in the western districts of Georgia, 
Flowers September — October. 
G 3 
VOL. IL 
