FLORA OF MICHIGAN. 107 



663. C. pumilus, Torr. [C. Hillii, W. M. Canby, Garden & Forest, 

 March 4, 1891.] Pasture Thistle. 



S. W. Mich., Wright's Cat.; Grand Rapids, Coleman's Cat. ; Macomb Co., Dr. Cooley ; Baldwin, 

 Dr. Beal; sand hills, Cheboygan Co., frequent, B. & K. 



*664. C. ARVENSIS, Hoffm. Canada Thistle. Th, 



Fields. A vile pest. Infrequent in center of the State, but increasing rapidly, and already trouble- 

 some in some localities. Our Canada Thistle law ought to be rigidly enforced. 



226. OXOPORDON, Vaill. 



665. O. ACANTHIUM, L. Cotton or Scotch Thistle. 

 Grand Rapids. Rare. 



227. KRIGIA, Schreber. DWARF DANDELION. 



666. K. Virgiiiica, Willd. 



Barrens. N. part of Clare Co. ; Walton. Rare. 



* 667. K. amplexicaulis, Nutt. L. P. 



Moist hillsides. Frequent. 



228. CICHORIUM, Tourn. SUCCORY OR CHICORY. 



*668. C. INTYBUS, L. Th. 



Ionia Co.: Flint; Detroit, etc.; roadsides. Frequent. 



229. TRAGOPOGON, L. GOAT'S-BEARD. 



669. T. PRATBNSIS. L. Goafs-beard. 

 Spreading. Hubbardston, Wheeler; Kalamazoo, Tuthill. 



23O. LEONTODON, L. HAWKBIT. 



670. L. AUTUMNALJS, L. Fall Dandelion. 

 Well established at Hubbardston.: 



231. HIERACIUM, Tourn. HAWK WEED. 

 *671. H. Caiiadense, Michx. Th. 



Woods. Frequent. 



672. H. PILOSELLA, L. Mouse-ear Hawkweed. 

 Introduced at Benzonia, G. A. Clark. 



*673. H. paiiiculatum, L. C. & S. 



Macomb Co.; S. Mich., Wright Cat. Scarce. 



*674. H. venosum, L. Rattlesnake-weed. Th. 



Dry soil in pine woods, or on oak land. A. form has been seen at Ionia not having purple veins in the 

 root leaves; abundant at Point-aux-Pins, at the entrance to Lake Superior, Macoun, Can. Cat. Frequent. 



*675. H. scabrum, Michx. Th. 



Woods. Common. 



*676. H. Gronovii, L. Hairy Hawkweed. C. & S. 



Dry soil. Ionia Co.; Flint; Macomb Co; S. W. Mich., Wright Cat. Infrequent. 



677. H. longipilum, Torr. Long-bearded Hawkweed. L. P. 



Melds. Macomb Co.; Traverse City; S. W.,- Wright Cat.; Grand Rapids, Coleman. Scarce. 



232. CREPIS, L. 



*678. C. TECTORUM, L. 

 Introduced. 



[H. UMBELL.ATUM, L. 



North shore of Lake Superior, Gray. 



14 



