SYNGENESIA FRUSTRANEA. 



457 



the involucrum; of the disk very numerous, dark purple. Seed four-angled. 

 Pappus a slight margin. Receptacle convex, chaff lanceolate, glabrous, 

 with purple summits, nearly as long as the florets of the disk. 



Grows in mountain meadows from Pennsylvania to Carolina, Pursh. In 

 tlie western districts of Georgia. 



Flowers August — October. 



13. HiRTA. 



R. hirsutissima: cau- 



libus 



virgatis 



mosis, unifloris 



subra- 

 foliis 



spathulato- lanceolatis, 

 triplinervibus, serratis, 

 hirtis; involucri squa- 

 mis triplici serie imbri- 

 catis, radio breviori- 



Very hirsute; stem 



virgate 



} 



sparingly 



bus 



? 



palels 



obovatis 



y 



acutis. 



branched, 1 -flower edj 

 leaves spathulate, lan- 

 ceolate, triplinerved, 

 serrate, hirsute; scales 

 of the involucrum im- 

 bricate in a triple se- 

 ries, shorter than the 



ray; chaff obovate, a- 

 cute. 



s 



p. pi. 



■^„ 



3. p 



Nutt. 2. p. 178. 



Walt. 214. Mich. 2. p. 143. Pursh, 2. p, 574. 



Root perennial. Stem two to three feet high, generally undivided, sca- 

 brous, hairy. Leaves alternate, sessile, semiamplexicaule, the lower spathu- 

 late-lanceolate, the upper lanceolate and ovate, all very hirsute. Floteers 

 solitary, terminal. Involucrum many leaved, the leaves narrow lanceolate', 

 hairy, the interior the smallest. Florets of the ray about fourteen, yellow, 

 obliquely two-cleft at the summit, hairy, twice as long as the involucrumj of 

 we disk very numerous, dark purple. Seed four-angled. Pappus obsolete. 

 Receptacle conic, chaffy; chaff oblong, fringed and purple at the summit, 

 Muy, as long as the florets of the disk. 



Grows in dry sandy soils. 



Flowers Juiie- 



Septeraber. 



t 



mis 



.14. Aristata. Pursh. 



R? caule hispido, ra- I Stem hispid, branch- 



bosis. 



elongatis, 

 unifloris 



corym- es 



VOL. II. 



7 



foliis 



long. 



corymbose 



9 



flowered; leaves Ian 



m3 



J 



I 



