402 
SYNGENESIA SUPERFLUA* 
three-toothed at the summit, strongly nerved, yellow; of the disk numerous* 
yellow, tubular, five-cleft at the summit. Anthers a little longer than the 
florets. Seeds somewhat angular, increasing towards the summit. Pappus 
composed of five to six membranaceous scales, ovate, acuminate, mueronate, 
lacerate, shorter than the florets of the di$k. Receptacle nearly globular, 
naked, excepting that between the florets of the ray are interposed subulate, 
entire scales as long as the florets of the disk. 
Grows in wet soils, along the margins of fresh water rivers— very com- 
mon. 
Flowers October — November. 
2. Q.UADRIDENTATUM. 
H. foliis angusto- 
lanceolatis, integris, ’ 
latius decurrentibus; 
flosculis disci quadri- 
dentatis. 
Mich. 
Leaves narrow Ian- 
eeolate, entire, widely 
decurrent; florets of 
the disk 4-toothed. 
Mich. 2. p. 132. Pursh, 2. p. 560. Nutt. 2. p. 173. 
Michaux describes this plant as growing in Carolina. Nuttall mentions 
it as seen by him in Louisiana. Pursh speaks of it also as a Mississippi 
plant, and says that its flowers are smaller than those of the preceding spe- 
cies. I have a specimen which I was once disposed to consider as belonging 
to this species, it differs, however, in several respects, but as it is imperfect I 
shall briefly notice it in this place. 
Stem about three feet high, winged, the wings less conspicuous than those 
of the H. Autumnale, pubescent. Upper leaves remote, linear-lanceolate, 
pubescent, entire; the lower ones in my specimen wanting. Flowers solitary, 
terminating the small branches. Involucrum about twelve-parted? Florets 
of the ray obovate, with the summit three or four toothed, yellow, larger 
than those of the H. Autumnale; of the disk very numerous, four or five 
parted. Seeds hispid, covered with scales rather than with hair. Pappus 
composed of six ovate acuminate, mucronate scales. Receptacle oblong, 
resembling that of the Rudbeckia. 
Grows in the swamps of Carolina. 
Flowers September— October. 
ECLIPTA. Gen. Pe. 1316. 
Involucrum poly- 
pliyllura, foliis subaequa- 
libus. Corolhtlce disci 
Involucrum 
leaved, the 
nearly equal. 
many 
leaves 
Florets 
