SYNGENESIA FRUSTRANEA. 



Ul 



i- 



Leaves of the exterior involucrum eight, linear; acute, as long as those of the 

 jnterior; of the interior lanceolate, pubescent' at base, dotted. Florets oi 

 the raj eight, obovate, obscurely three-toothed; of the disk numerous, yel- 

 low. Anthers dark purple. Seed compressed, with the margin serrulate, 

 nearly as long as the florets of the disk. Chaff of the receptacle linear, ob- 

 tuse, longer than the florets of the disk, spotted near the summit with purple. 

 Grows in wet grounds. 



Flowers August and September. - 



13. Aristata. Mich. 



C. piibescensj foliis 



quinato pinnatis, folio- 



lis seiratis; radiis inte- 



gris, lato ovalibiis 



seminibus cimeato-ob- 



ovatis, biaristatis; aris- 



tis longissimis, divari- 

 catis. Mich. 



5 



Pubescent; leaves 

 quinate, piunate, the 

 leaflets serrate; florets 



of 



the 



ray 



entire. 



1 



broad, oval; seed cii 

 neate-ob ovate, 2- awn 



ed; awns 

 divaricate. 



very 



long, 



Mich. 2. p. 140. Sp. pi. 3. p. 2250. Pursh, 2. p. 568. Nutt. 2. p 

 180, 



h ■ 



Flowers large^ rays very broad, Pursh. With this species I am 

 quainted. 



Grows in Carolina, Pursh. In Illinois, Mich. 

 Flowers August — September. 



unac- 



\ 



14. PUBESCEJNS. 



E. 



% 



C. pubescens; foliis 

 quinato-pinnatis, folio- 

 lis lanceolatis, obtusis, 

 integerrimis, laterali- 

 us parvulis; invohicri 

 exterioris foliolis ova- 



to-lanceolatis 



3 



Pubescent; leaves 

 quinate, pinnate, leaf- 

 lets lanceolate, obtuse, 

 entire, the lateral ones 



leaves of the 



small 



exterior 



J 



involucrum 



radiis ovate-lanceolate 



? 



flo- 



«adulatis? pappo di- i rets of the ray undu 



Pjiyllo, foliolis subula- 



tis, pubescentibus. E. I subulateVpubescent. 



late? 



pappus 



2-leaved 



9 



VOL. II-. 



K 



3 



