412 
SYNGENESIA SUPERFLUA* 
Willd. Sp. pi. 3. p. 2224. Mich. 2. p. 134. Purshj-2. p. 565. Nutt. 2, 
p. 170. 
Y. Occidentalis. Walt. p. 213. 
Siegesbeckia Occidentalis. Lin. Gron. 
Root creeping, perennial. Stem herbaceous, erect, four to six feet high, 
pubescent, four-winged, branches opposite, brachiate. Leaves large ovate, 
acuminate, acutely and irregularly toothed, triplinerved, pubescent, some- 
what scabrous, abruptly attenuated at base into a petiole one to two inches 
long. Flowers in large somewhat fastigiate corymbs, the small branches or 
peduncles alternate. Involucrum eight to ten leaved, loosely imbricate, 
the leaves oblong, obtuse, pubescent, the interior resembling scales. Florets 
of the ray one to three, yellow, lanceolate, three-toothed at the summit, 
nearly an inch long; of the disk twenty to twenty-four, tubular, yellow, five- 
cleft at the summit. Seeds obovate, compressed, hispid, crowned with two 
\ hairy awns?** Receptacle flat, chaffy; scales lanceolate, acuminate, pubes- 
cent, as long as the florets of the disk. 
Grows in dry sandy soils. 
Flowers June — August. 
SYNGENESIA FRUSTRANEA. 
ACTINOx\IERIS. Nuttall. 
Involucrum poly- 
pliyllum, squamis sub- 
aequalibus (biseriatis?) 
Radii corollulce 4 — 8 
(12.) Receptaculum 
paleaceum squamis se- 
mina amplexicaulibus. 
Semina compressa, 
marginata, aristis dua- 
bus persistentibus. 
Involucrum many 
leaved, scales nearly 
equal (in 2 series?) Flo- 
rets of the ray 4 — 8 
(12.) Receptacle c\vdS.- 
fy, the scales embrac- 
ing the seed. Seeds 
compressed, margined, 
bearing 2 persistent 
awns. 
1. Helianthoides? Nutt. 
A. foliis lanceolatis, 
acutis, serratis, subtus 
villosis, scabris; caule 
alato; panicula pauci- 
flora, radiis eiongatis. 
Leaves lanceolate, 
acute, serrate, villous 
underneath, scabrous; 
stem winged; panicle 
few flowered; florets of 
the ray long. 
