CATALOGUE OF PLANTS. 151 
CARDUUS, L. 
Musk Thistle. 
C. nutans, L. 
Hudson: On hills back of Hoboken—Schrenk ; in ballast at 
Commuuipaw—A. Brown. Camden: In ballast—Martindale. 
Adventive from Europe. 
CNICUS, L. (Cirsium, DC.) 
Thistle. 
C. aRVEnsis (L.), Hoffm. Canada Thistle. 
Fields and roadsides. Frequent, notwithstanding its legal 
exclusion. Adventive from Europe. 
C. LANCEOLATUS (L.), Willd. 
Fields and roadsides; cowmon. Naturalized from Europe. 
C. altissimus (L.), Willd., var. discolor (Muhl.), Gray. (Cirsium dis- 
color, Spreng.) 
Meadows and low grounds. Common throughout the State.* 
Forma albiflora, Britt. 
Bergen: Carlstadt—Schuh. 
C. muticus (Michx.), Pursh. Swamp Thistle. 
Gloucester: Two miles west of Mullica Hill—B. Heritage. 
Mercer: Princeton—Willis; Trenton—Apgar. Union: Plain- 
field—Tweedy ; and frequent in the northern counties. 
C. odoratus (Muhl.), B. 8S. P. (Cirsium pumilum, Spreng.) Pasture 
Thistle. 
In pastures. Frequent throughout the State. 
C. spinosissimus (Walt.), Darl. (Cirsium horridulum, Michx.) Yellow 
Thistle. 
Burlington: Pemberton—Miss Willmarth. Hunterdon: A 
single plant near Rosemont—Best; and frequent along the 
junction of salt or brackish marsh with the upland, eastern and 
southern counties. . 
* This is the Cirsium altissimum of the Knieskern and Willis Catalogues. I have 
not been able to establish the occurrence of the real C. altissimus in the State, and the 
same statement applies to the Cirstwm Virginianum recorded by Dr. Willis from Mon- 
mouth Co. 
