434 
SYNGENESIA FRUSTRANEA. 
This species appears to differ much in size, and somewhat in habit, and 
may require further comparison. The plant which I have described above 
I collected around ponds a few miles from Darien, along the road to Fort 
Barrington. The pappus, as in the Helianthus, appears to be an appendage 
slightly attached to the seed, and differing from the pericarp in substance 
and colour. 
In the C. Lanceolata as figured by Dillenius, (Hort. Elth. t. 48. f. 56.) 
the plant is altogether larger, and the lowest leaves have long attenuated 
bases. 
Grows in damp soils. 
Flowers April — May; perhaps through the summer. (August — October, 
Pursh.) 
2. Crassifolia. Aiton. 
C. foliis obovato- 
oblongis, integerrimis, 
basi attenuatis, hirsu- 
tis; pedunculis elonga- 
tis, basi hirsutis. 
Leaves obovate-ob- 
long, entire, tapering 
at base, hirsute; pe- 
duncles long, hirsute at 
base. 
Sp. pi. 3. p. 2256. Nutt. 2. p. 179* 
C. Lanceolata, var. b. Mich. 2. p. 137* Pursh, 2. p. 567* 
Root perennial. Stem about two feet high, sparingly divided at base, 
striate, hairy below the upper pair of leaves. Leaves few, opposite, oblong, 
narrow, the lower attenuated at base, forming a petiole one to two inches 
long, very hairy. Floivers solitary, terminal. Involucrum nearly equal, 
glabrous. Florets of the ray about eight, bright yellow, dilated and toothed 
at the summit. 
The leaves of this species though thicker than those of C. Lanceolata, 
scarcely merit the character of crassifolia; hirsuta would have been a more 
appropriate appellation. 
Grows in pine barrens, in soils rather dry. 
Flowers June — 
3. Arguta. Pursh. 
C. glabra; foliis pe- 
tiolatis,lanceolato-ova- 
tis, sensim acuminatis, 
argute serratis; pedun- 
culis axillaribus termi- 
Glabrous; leaves pe- 
tiolate, lanceolate-ov- 
ate, gradually acumi- 
nate, acutely serrate; 
peduncles axillary and 
