FLORA UF THK I TPER SUSt<»lEH ANNA. 



CARDUUS L. 



C. lanceolatus L. C«>mm<>\ Tiii^ii.k. Plentiful in waste places, 

 usually in good soil. ( Cntcus lanceolatus HolYm. ) 



C. discolor (Muhl. ) Nutt. Tai.l Thistle. Not rare. Found 

 in low grounds. This species is easily confused with C. intiti- 

 cus, but may be distinguished by its leaves which are white 

 woolly beneath. (C?ticus alttsshnus Willd., var. discolor A, 

 Gray.) 



C. mutlcus (Michx. ) Pers. Swamp Thistle. Abundant along 

 streams and in swamps. Stem very tall, scarcely prickly» 

 heads medium sized, purple. This species when in bloom at- 

 tracts numerous ruby-throated humming-birds. Aug. ( Cnicus 

 muticus Pursh. ) 



C. odoratus (Muhl.) Porter. Pasttke Thistle. Not uncom- 

 mon in fields and pastures. Stem low, heads few, large, fra- 

 grant. An ornamental species. {Cm'ciis pumilus Tovr.) 



C. arvensis (L. ) Rob. Canada Thistle. Cursed Thistle. 

 Abundant in fields, meadows and waste grounds. Heads small, 

 purple. A troublesome pest, hard to eradicate. A white- flow- 

 ered form is occasionally found. {Cnicus arvensis Hoffm). 



CICHORIACE/C. 



CICHORIUM L. 



C. Intybus L. Chickorv. Succory. Becoming common along 

 roadsides and in other waste grounds. Heads large, bright 

 blue. The root is used in adulterating coffee. 



TRAGOPOGOX L. 



T. porrifollus L. Salsify. Vegetable Oyster. An occasional 

 escape from cultivation found along roadsides and about dwell- 

 ings. Flowers purplish. 



T. pratensis L. Goat's Beard. Go-to-bed-at-noo.v. Becom- 

 ing common in fields, along roadsides and in waste places. 

 Flowers bright yellow, closing by mid-day. Often mistaken for 

 the preceding species. 



