No. 14.] FLOWERING PLANTS AND FERNS. 407 



owner or possessor shall still neglect to comply with the pro- 

 visions of this section, he shall be fined not more than five 

 dollars, for each and every day of such neglect after such 

 notice." Revised Statutes, sec. 1374. 



ONOPORDUM L. Cotton or Scotch Thistle. 



Onopordum Acanthium L. 



Cotton Thistle. 



Rare. Fields and roadsides : Ledyard, Groton and Water- 

 ford (Graves), New Haven (Harger). July — Sept. Ad- 

 ventive from Europe. 



CENTAUREA L. Star Thistle. 



Centaurea Jacea L. 



Meadow Centaury. 



Rare. Fields: Norwich (Mrs. E. E. Rogers), Guilford 

 (G. H. Bartlett), Southington (Bissell), Bridgeport (Eames). 

 June — Sept. Adventive from Europe. 

 Centaurea Jacea L., var. lacera Koch (torn). 



Rare. In fields: Granby (Bissell), Naugatuck (A. E. 

 Blewitt), Oxford (Harger), Bridgeport (Eames). June — 

 Sept. Adventive from Europe. 



Centaurea Cyanus L. (classical name for this species) . 

 Corn-flower. Bluebottle. Bachelor's Button. 



Rare. Waste ground and about gardens as an escape 

 from cultivation: Ledyard and Lyme (Graves), East Wind- 

 sor (Bissell), Southington (Andrews, Bissell), Seymour and 

 Oxford (Harger), Fairfield County (Eames). June — Oct. 

 Introduced from Europe. 



Often cultivated for ornament. The plant is medicinal. 



Centaurea nigra L. (black). 



Spanish Buttons. Hardheads. Knapweed. Black Centaury. 

 Rare. Roadsides and waste ground: New London and 

 Waterford (Graves), Waterbury (A. E. Blewitt), Bridge- 

 port (Eames), Norwalk (G. P. Ells), Salisbury (Bissell). 

 May — Aug. Introduced from Europe. 

 Centaurea nigra L., var. radiata DC. (bearing rays). 



Rare. Waste ground: Waterbury (J. N. Bishop), Oxford 



