SYNGENESIA NECESSAR1A. 
469 
Stem two to three feet high, slightly furrowed, generally glabrous. Up- 
per leaves sessile, the lower on short petioles, irregularly and coarsely 
toothed, sometimes slightly sinuate and veined along the margin, hairy and 
scabrous on both surfaces. Flowers in a small terminal corymb. Scales 
of the involucrum ovate, broad, handsomely fringed. Florets of the ray 
about ten, nearly elliptic, scarcely an inch long. 
This is nearly allied to S. Astericus, but it seems sufficiently distinct by 
its glabrous stem and its corymbose and smaller flowers; its leaves too ap- 
pear to be more rigid and perhaps less scabrous on the under surface. 
Grows in the western districts of Georgia. 
Flowers August — September. 
14. Asteriscus. Lin. 
S. caule simplici, te- 
reti, hispiclo; foliis op- 
posite alternisve, ob- 
longis, acutis, serratis, 
scabris; floribus paucis, 
plerumque solitariis. 
Stem simple, terete, 
hispid; leaves opposite 
or alternate, oblong, 
acute, serrate, sca- 
brous; flowers few, 
generally solitary. 
Sp. pi. 3. p. 2332. Mich. 2. p. 146. Pursh, 2. p. 578. 
Stem two to three feet high, terete, very hispid. Leaves all lanceolate, 
acute, serrate, sometimes coarsely dentate, scabrous, and somewhat hispid 
on both surfaces; the lower on short petioles, generally opposite; the upper 
alternate, sessile, sometimes all alternate. Flowers never numerous, fre- 
quently solitary, terminal. Scales of the involucrum ovate ciliate, the ex- 
terior acute. Florets of the ray eight to ten. 
Grows in dry sandy soils. 
Flowers June- — August. 
15. Pumilum. Mich. 
S. caule petiolisque 
tomentosis; ramis uni- 
floris; foliis alternis, 
cordato-ovatis, serra- 
tis, petiolatis, subtus 
albo tomentosis; semi- 
nibus muticis. 
Stem and petioles 
tomentose; branches 
one-flowered; leaves 
alternate, cordate, o- 
vate, serrate, petiolate, 
white and tomentose 
underneath; seeds un- 
awned. 
