--] 



SYNGENESIA NECESSARIA. 



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 loaves 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. AsTERlSCLS. 



Lin. 



S. caule simplici, le- [ Stem simple, terete, 

 reti, hispido; foliis op- I hispid; leaves opposite 

 positis alternisve, ob- t or alternate, oblong, 



longis, acutis, serratis, 



acute, serrate. 



scabrisj floribus paucis, brous; flowers 



sea- 

 few, 



plerumque solitariis. | 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 lanceolatr, 



,.,^ w^ w-- .- ^-^ *^^^ msM^mmy «.v.A^i.^<f » ^ » T ama^j^ ivf JUrfVWl/I^O CIAS Xail^^Uin t V « 



acute, serrate, sometimes coarsely dentate, scabrous, and somewhat hispid 



-,—>,, ^v^.^ui.^, .jwiaii^iiiiji^ J vuaiacij ui^iiiaic;, oLauiuu:?, niiti r*vlJir\vuai UlbUlU 



on both surfacesj the lower on short petioles, generally opposite; the upper 



--.. .^vi,«ft oMnciv.v,.5, tiic luwei uii aiiuii pcuuica, gtrut:icuiy uppusjiif^ Ult; upper 



5^1ternate, sessile, sometimes all alternate. Floicers ixevcr 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 I Stem and petioles 

 tomentosis; ramis uni- tomentose; branches 

 floris: foliis alternis, one-flowered; leaves 



serra- alternate, cordate, o- 



cordato-ovatis 



iJs, petiolatis, subtns [ vate, serrate, petiolate, 



white and tomentose 

 underneath J* seeds un- 

 awned. 



albo tomentosis j semi- 

 ijibus muticis. 



