﻿COMPOSIT.E. CifisiuM. 



appropriate, and should 



'■atlier loosely imbricated in few series, tapering to a 



Casin ,a„ce.,a,e .innatifiC , he shon lobes -.ooSC^rS 



spinose ; heads (large) surrounded ^by a whorl or dense cluster of pectinat^e- 



ciliate, tapering 1o a very sharp point, unarmed ; flowers pale yellow.— 

 Michx..' fi. 2. p. 90 ; DC. ! jyrodr. 6. p. 651. C. megacanthum, Nutt.Hn 

 trans. Amer.phil. soc. I. c. Carduus horridulus, Pers. syn. 2. p. 390. C 

 epinosissimus, Walt. Cnicus horridulus, Pursh, fi. 2. p. 507 ; Bigel. ! fi. 

 Bosi. ed. 2. p. 291 ; Hook. ! compan. to hot. mag. 1. p. 48. C. spinosissi- 

 mus, Darlingt. ! fi. Ccst. p. 438.— Varies, with the anthers and styles re.l- 

 dish or purple [Bigel. I. e. Oakes, mss.), or with the corolla sometimes 



13. ^EUiottu: flowers purj^e.— Cnicus horridulus, Ell. sk. 2. p. 272. 



Hills and poor soils, from the coast of Massachusetis.' and Connecticut ! to 

 Florida! and Louisiana ! /3. Southern States, Elliott. Florida, Dr. Chap- 

 man! (Corolla in dried specimen light purple, the anthers yellowish.) 

 Lincoln County, N. Carolina, Mr. Curtis! Dr. Hunter! {Corolla, anth, 

 and style deeply purple.) June-Aug. in the Northern, March-May in 



tended'by 12- 



Heads by abortion diacious : exterior scales of the involucre oppressed, 

 '.armed, or the outermost tipped with a short prickle or bristle ; the innermost 

 ■th scarious tips : filaments nearly glabrous : roots creeping. (Cephano- 

 os, DC.) 



>■ C. arvense (Scop.) : rhizoma creeping ; 



