COMPOSITAE 341 



2. Carduus altissimus L. TALt, OR Roadside Thistle. (Man. p. 

 1031;.! P./ 4059.) In fields and thickets, Mass. to Minn., Fla., Neb. 

 and Tex. — Pennsylvania : Bucks ; Dei<aware ; Chester ; Lancaster ; 

 York ; Bedford ; Ali^egheny. 



3. Carduus discolor (Muhl.) Nutt. Field Thistle. (Man. p. 1031 ; 

 I. F. /. 4060.) In fields and along roadsides, Quebec and Ont. to Ga., 

 Minn., Neb. and Mo. — Pennsylvania : Northampton; Bucks; Phila- 

 delphia ; Delaware; Chester; Lancaster; York; Franklin; 

 Huntingdon ; Bedford ; Allegheny. 



4. Carduus odoratus (Muhl.) Porter. Pasture ThisTle. Fragrant 

 Thistle. (Man. p. 1032 ; I. P. /. 4067.) In fields, Me. to Pa. and Del. — 

 Pennsylvania : Monroe ; Bucks ; Delaware ; Chester ; Lancaster ; 

 Huntingdon ; Somerset ; Allegheny. 



5. Carduus spinosissimua Walt. YELLOW ThisTLE. (Man. p. 1033 ; 

 I. F. f. 4o6g.) In moist or dry sandy soil. Me. to Pa., Fla. and Tex. 

 Abundant along edges of salt meadows in N. Y. and N. J. — Pennsylva- 

 nia : Lancaster ; Chester ; Delaware. 



6. Carduus muticus (Michx.) Pers. Swamp Thistle. (Man. p. 

 1033 ; I. F. y! 4070). In swamps and moist soil, Newf. to Fl., N. W. Terr. 

 and te.-%..— Pennsylvania : Northampton ; Bucks ; Chester ; Lan- 

 caster ; Dauphin ; Berks ; Huntingdon ; Washington ; Erie ; 

 Allegheny. 



7. Carduus arvensis (L. ) Robs. Canada Thistle. Creeping 

 Thistle. (Man. p. 1033.; I. F. f. 4071). In fields and waste places, 

 Newf. to Va., Minn, and Neb. Nat. from Eu. — Pennsylvania : Tioga ; 

 Lackawanna ; Monroe ; Lycoming ; Columbia ; Northampton ; 

 Bucks; Delaware; Chester; Lancaster; Allegheny. 



8. Carduus nutans L. Musk Thistle. Plumeless Thistle. (Man. 

 p. 1033 ; I. F. / 4072. ) In waste places, Pa. and N. J. to N. B. and in 

 ballast about seaports. Nat. or adv. from Eu. Native also of Asia. — 

 Pennsylvania : Dauphin, Harrisburg. 



9. Carduus crlspus L. Curled Thistle. (Man. p. 1033; I. P./. 

 407s.) In waste places, N. B. and N. S., and in ballast grounds about 

 seaports. Adv. from Eu. Native also of Asia.— Pennsylvania : Phila- 

 delphia, ballast. 



53. MARIANA Hill. 



1. Mariana Mariana (L.) Hill. Milk ThisTLE. (Man. p. 1034; 

 I. P. /. 4074.) Escaped from gardens, Kingston, Ont. In ballast about 

 eastern seaports, and on Pacific coast from B. C. to southern Calif., where 

 it is naturalized. — Pennsylvania : Philadelphia, ballast. 



54. ONOPORDON L. 



1. Onopordon Acanthium L. Cotton Thistle. Scotch Thistle. 

 (Man. p. )034; I. F. /. 4075.) In waste places, N. S. and Ont. to N. J. 

 and Mich. Nat. from Eu. Native also of Asia. — Pennsylvania : Phila- 

 delphia, waste places ; ALLEGHENY. 



