FLORA OF VERMONT 



89 



ONOPORDON 



O. Acanthicm, L. Cotton Thistle. "Dry pastures, Williston and Grand 

 Isle," Robbins; Charlotte, Pringle. 



PETASITES 



P. palmata, Gray. Sweet Coltsfoot. Wooded borders of cold swamps and 

 streams; occasional. Fairhaven, Robbins; Charlotte, Pringle ; Sutton, 

 Faxon ; Peacham, Blanchard. 



PICRIS 

 P. hibracioide-s, L. Adventive from Europe. Charlotte, Pringle. 



POLYMNIA 

 P. Canadensis, L. Limestone ledges, Rutland and Proctor, Eggleston. 



PRENANTHES. (NABALUS.) Rattlesnake-root 

 P. alba, L. Borders of rich woods ; occasional. 



P. altissima, L. Rich moist woods ; common. 



P. altissima, L. var. hispidula, Fernald, n. var. "Stem villous or hispid: 

 leaves at least hispidulous on the veins beneath. — Vermont, Monkton, 

 Sept. 18, 1879, C. G. Pringle: Maine, Augusta, Sept. 2, 1886, E. C. 

 Smith; Woodstock, 1887, J. C. Parlin: Massachusetts, North Leo- 

 minster, Sept., 1891, Miss L. E. Shedd." 



P. Boottii, Gray. Mansfield Chin and Nose ; Pringle. 



P. trifoliolata, Fernald, in h^rb. (Nabalustrifoliolatus, Cass; P. Serpentaria, 

 Gray, in part, not Pursh. ) Lion's-foot. Dry sterile soil ; frequent. 



RUDBECKIA. Cone-flower 

 R. hirta, L. Yellow Daisy. Meadows ; common. 

 R. laciniata, L. Low thickets ; frequent. 



SENECIO. Groundsel 



S. aureus, L. Golden Ragwort. Swamps ; common. 



S. Bilsam'itaj, Mahl. (S. aureus, L. var. Balsatnitae, Torr. and Gray. )Moist 

 cliffs and rocky banks of streams ; frequent. 



S. obovatus, Muhl. (S. aureus, L. var. obovatus, Torr. and Gray.) Dry 

 open woods. Bennington and Pownal, common, Robbins, Churchill. 



S. Robbinsii, Oakes. Com non in the cold swamps of northern and central 

 Vermont. 



S. vulgaris, L. Garden weed ; occasional. 



