I S 9 4 ■ J PLANTS OF MONROE COUNTY. 79 



544. C. altissimus Willd. var. discolor Gray. [Cirsium discolor Spreng.) 



[Cardmis discolor (Muhl.) Xutt.] 

 Borders of woods ; scarce. 



545. C. muticus Ph. {Cirsium muticum Mx.) [Cardials muticus (Mx.) Pers. ) 



Swamp Thistle. 



Swamps ; not common. Scottsville. Caledonia, Livington county. 

 Bergen, Genesee county. 



546. C. pumilus Torr. {Cirsium pumilum Spreng.) [Cardials odoratus 



(Muhl.) Porter.] Pasture Thistle. 

 Old fields ; infrequent. 



547. C. arvensis Hoff. {Cirsium arvense Scop.) [Cardials aruensis (L.) 



Robs.] Canada Thistle. 

 Fields, roadsides, waste places ; very common. 



548. C. arvensis Hoff. var. albiflorus. Frequent. 



214- ONOPORDON Vaill. [L.] 



549. O. ACANTHIUM L. SCOTCH THISTLE. 



Roadsides and fields ; scarce. North Union street and Lake avenue, 

 Rochester. Irondequoit. Chili. Bergen. Wayne county. 



SILYBUM Gaertn. 



— S. Marianum Gaertn. [S. Marian um (L.) Gaertn.] Milk Thistle. 

 Neglected grounds, East avenue, Rochester, 1891-1894. 



215. CENTAUREA L. 



550. C. benedicta L. {Cnicus benedictus L.) [Cnicus be7iedictus L.] 



Kendall, Orleans county, Prof. IV. H. Lcnnon. 



551. C. Jacea L. Neglected lawn, East avenue, Rochester, 1882-1894. 



216. LAMPSANA Tourn. [Lapsana L.] 



552. L. COMMUNIS L. 



Roadsides and grass plats; rare. Near Rochester, Otto Bets. Brock- 

 port, Prof. Lennon. Wayne county. 



217. CHICORIUM Tourn. [L.] 



553. C. Intybus L. Chicory. Succory. 



Fields and roadsides ; common. Abundant in many places. In the 

 southern part of Ontario county it is known as Evan s Pink. 



218. TEA GOPOGON L. 



554. T. porrifolius L. Salsify. 



Fields ; frequent in the vicinity of Rochester. 



555. T. pratensis. L. Yellow Goat's-beard. 



Rare. Waste lot, State street, Rochester, /. B. Fuller. Along rail- 

 road, G. P. Fish. Brockport, Prof. Lcnnon. L. Holzcr. 



