332 * 
SYNGENESIA SUFERFLUA. 
date, and supported by petioles six inches long; stem leaves two to four iiv 
ches long, deeply pinnatifid, with the terminal segment ovate, and irregularly 
notched. Involucrum as in most of our species appearing to be one-leaved, 
deeply divided with one or two small scales at base, the segments or leaflets 
subulate, florets of the ray yellow, larger than those of S. Aureus. Seed 
oblong, striate. Pappus setaceous, very white, and very abundant, so that 
the heads when the seeds are mature, resemble small balls of cotton. 
Sent me under this name from Salem, North-Carolina. I have specie 
mens from the middle country of South-Carolina, which, though wanting 
root leaves, appear to belong to this species. 
Flowers. 
8. Lobatus. Persoon. 
S. glaber; foliis pin- 
natifido-lyratis; lobis 
rotundatis subrepandis; 
corymbo composite, pe- 
dunculis summis sub- 
umbellatis. 
Glabrous; leaves pin- 
natifid, lyrate, lobes 
round and slightly re- 
pand; corymb com- 
pound, the highest pe- 
duncles somewhat um- 
bellate. 
Persoon, 2. p. 436. Nutt. 2. p. 165. 
S. Lyratus. Mich. 2. p. 120. 
Annual. Stem erect, one to three feet high, angled, glabrous, fistulous, suc- 
culent, with the epidermis adhering only at the angles. Leaves sessile, pin- 
natifid, with the lobes spathulate and round, coarsely toothed, glabrous. 
Flowers in a large panicle, composed of many small umbels. Involucrum 
with one or two small scales at base, the leaflets linear, acute, succulent; 
florets of the ray about twelve, yellow, the ligules lanceolate, sometimes obo- 
vate, three toothed at the summit ; the florets of the disk membranaceous. 
Stamens as long as the florets of the disk. Style a little longer than the sta- 
mens, two-cleft at the summit. Stigmas nearly globular. Seed oblong, stri- 
ate. Pappus setaceous, very white. Receptacle naked. 
Grows in damp soils, not absolutely inundated ; rice fields when in good 
order are literally covered with this weed in the spring of the year, which 
to the planters is generally known by the name of butter weed. 
Flowers January to May and sometimes in October. 
ARNICA. Gen. Pb. 1296. 
Involucrum foliolis 
aequalibus. Corollulce 
radii saepius filamentis 
Involucrum with the 
leaflets equal. Florets 
of the ray often with 
