450 
Syngenesia frustranea. 
dentatis, caulinis lan- 
ceolato-ovatis, subinte- 
gerrimis, utrinque acu- 
minatis; radiis longis- 
simis, deflexis, bifidis. 
thed, those of the stem 
lanceolate, ovate, near- 
ly entire, acuminate at 
each end; florets of the 
ray very long, deflect- 
ed, two-cleft. 
Sp. pi. 3. p. 2249. Walt. p. 214. Mich. 2. p. 143. Pursh, 2. p. 573. 
Nutt. 2. p. 178. 
Root perennial. Stem four to five feet high, sparingly branched, some- 
times a little roughened, often smooth. Leaves ovate-lanceolate, slightly 
acuminate, triplinerved, scabrous on both surfaces, tapering at base to a 
petiole and varying much in the length of the petiole and the coarseness of 
the serratures. Flowers large, terminal. Leaves of the involucrum nume- 
rous, linear-lanceolate, fringed, imbricate, at least in four or five series, 
squarrose. Florets of the ray about twelve, purple, two inches long, nar- 
row, two-cleft at the summit, reflected; of the disk numerous, small. Seed 
Jfour -angled, inversely pyramidal, the summit concave and crenulated. Re- 
ceptacle convex, chaffy, the chaff narrow, acuminate, nerved, glabrous, 
longer than the seeds and florets, and with their acute, rigid points forming 
a hispid capitulum. 
This species appears at present to exhibit many varieties. It differs so 
much in its generic characters, in involucrum, seed, and chaff* of the recep- 
tacle, from most if not all of the other species of the genus^tKaf rt will pro- 
bably be separated and its distinct varieties established as species. 
Grows in the upper and mountainous districts of Carolina and Georgia— 
in the western districts of Georgia common. 
Flowers August- — October. 
** Involucro subce- 
quali; paleis inermibus. 
2 . PlNNATA. Mich. 
R. foliis omnibus 
pinnatis, pinnis inferi- 
oribus interdum bipar- 
titis; pappo integerri- 
mo; caule sulcato his- 
pido. 
** Involucrum near- 
ly equal ; chaff unarm- 
ed. 
Leaves all pinnate, 
lower segments some- 
times 2-parted; pappus 
entire; stem furrowed, 
hispid. 
