SYNGENESIA SUPERFLUA. 
409 
longer than the involucrum, yellowish, five-cleft. Styles and stamens about 
as long as the florets of the disk. Seeds of the ray three; of the disk four 
angled, crowned with a four-toothed membrane, the angles very acute. Re- 
ceptacle flat, impressed, chaffy; chaff obovate, acuminate, with a rigid point, 
pubescent. 
Grows along the margin of salt water. 
Flowers June — -October. 
2. Angcstifouum. Pursh. 
B. foliis alternis, lin- 
earibus, superne latio- 
ribus, integerrimis, 
glabris; involucri folio- 
lis acute lanceolatis. 
Leaves alternate, 
linear, broader near 
the summit, entire, gla- 
brous; leaves of the 
involucrum acutely 
lanceolate. 
Pursh, 2. p. 564. Nutt. 2. p. 172. 
With this species, which was described by Pursh from specimens in the 
Herbarium of Sir Joseph Banks, I am unacquainted. It was found proba» 
bly in Florida by Bartram. 
Grows in Georgia and Florida. Pursh. 
Flowers — 
SIEGESBECKIA. Gen. Pe. 1320. 
Involucrum exterius 
5-phyllum, patens. Ra- 
dius dimidiatus. Semi- 
na subtetragona. Pap- 
pus nullus. Recepta- 
culum paleaceum. 
1. Laciniata. 
S. foliis laciniato- 
pinnatifidis, superiori- 
bus lanceolatis, inte- 
gris, tuberculatis; in- 
VOL. II. F 
Exterior involucrum 
5-leaved, expanding. 
Florets of the ray 
small. Seed somewhat 
4-angled. Pappus 0. 
Receptacle chaffy. 
Leaves Iaciniate pin- 
natifid, the upper lan- 
ceolate, entire, rough- 
ened with tubercles; 
3 
