474 
SYNGENE3IA NECESSARIA. 
1. Integrifolium. Lin. 
P. foliis oblongis, in- 
equaliter dentatis, as- 
peris, superioribus am- 
plexicaulibus. 
Leaves oblong, une- 
qually toothed, rough, 
the upper ones amplex- 
icaule. 
Sp. pi. 3. p. 2385. Mich. 2. p. 147- Pursh, 2. p. 580. Nutt. 2. p. 
183. 
Root perennial. Stem one to two feet high, striate, slightly scabrous. 
Leaves alternate, ovate-lanceolate, sessile, the upper amplexicaule, toothed, 
very scabrous on both surfaces. Flowers numerous in a terminal corymb. 
Scales of the involucrum five-leaved, villous. Florets of the ray five, very 
small; of the disk numerous, tomentose. Seed obovate. Receptacle chaffy. 
(The five external scales of the receptacle very broad, shielding the same 
number of minute radial florets, each connected at the base with two mascu- 
line sheathed florets, Nutt.) 
Grows in dry soils, in the middle and upper districts of Carolina and 
Georgia. 
Flowers June — September. 
IVA. Gen. Pe. 1429. 
Involucrum 5 (5 — 
10?) phyllum. Radii 
corollulce 5, nudae. 
Anther ce approximate, 
non coalite. Semina 
obovata. Pappus nul- 
lus. Receptaculum se- 
tosum. 
1. Frutescens. Lin. 
I. fruticosa; foliis 
oppositis, lanceolatis, 
profunde serratis, sub 
scabris; capitulis de- 
presso globosis. 
Involucrum 5 (5 — 
10?) leaved. Florets 
of the ray naked. An- 
thers approximate not 
united. Seed obovate. 
Pappus 0. Receptacle 
bristly. 
Shrubby; leaves op- 
posite, lanceolate, deep- 
ly serrate, slightly sca- 
brous; heads globular 
depressed. 
