FLORA OF WORCESTER COUNTY. 31 



CNICUS, Tourn. Thistle. 



*lanceolatus, Hoffm. Common Thistle. Common. 



horridulus, Pursh. Southbridge. L. E. Ammidown. 



altissimus, Willd., var. discolor, Gray. Not rare. 



muticus, Pursh. Swamp Thistle. Worcester. Prof. Eaton. 



pumilus, Torr. Pasture Thistle. Southbridge. 



L. E. Ammidown. 



*arvensis, Hoffm. Canada Thistle. Common. 



KRIGIA, Schreber. Dwarf Dandelion. 



Virginica, Willd. Upland woods and pastures. 



CICHORIUM, Tourn. Chicory. 



*Intybus, L. Roadsides, not rare. 



LEONTODON, L. Fall Dandelion. 



*autumnalis, L. Meadows and roadsides. Common 



in southern part of the county. 

 HIERACIUM, Tourn. Hawkweed. 



*aurantiacum, L. Winchendon. A. S. Allen. 



Canadense, Michx. Copses, common. 



paniculatum, L. " " 



venosum, L. Rattlesnake-weed. In dry woods. 



scabrum, Michx. Dry open woods. 



Gronovii, L. Hairy Hawkweed. Common. 



PRENANTHES, Vaill. Rattlesnake-root. 



alba, L. White Lettuce. Rich woods, common. 



serpentaria, Pursh. Lion's-foot. G. E. Stone. 



altissima, L. Rich woods, not rare. 



TARAXACUM, Haller. Dandelion. 



*officinale, Weber. Common, Dandelion. Everywhere. 

 LACTUCA, Tourn. Lettuce. 



Canadensis, L. Wild Lettuce. Rich soil, common. 



