346 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. , 



LAPSANA. NippLB-woRT. 



L. COMMUNIS L. — Roadside, Lenox. A few plants only, noted in 

 1920 ; a single plant in cultivated ground, Lee (1920), the plant from 

 Lee strigose-pubescent. 



LEONTODON. Hawkbit. 



L. AUTUMNALis L. Fall Dandelion. — Grassland; occasional. 

 Williamstown; Lenox; Hinsdale; Washington. 



Locally common in Williamstown, and the eastern part of Hinsdale. 



LEPACHYS. 



(RatiUda 111. Fl. ed. 2.) 



L. PiNNATA (Vent.) T. & G. Cone-flowee. — Long established for 

 many rods along a dry roadside bank in Lenox. 



MATRICARIA. Wild Chamomile. 



M. Chamomilla L. — Adventive, Cheshire (Winslow). 



M. suAVEOLENS (PuTsh) Buchenau. Pineapple-weed. — {M. matri- 

 carioides 111. Fl. ed. 2.) 



First noted in 1895 when rare. Now frequent in waste ground and 

 along roadsides. Summit of Greylock, 3500 feet. 



ONOPORDUM. Cotton Thistle. 



O. AcANTHiUM L. Cotton Thistle. — Hillside pastiu-e, Lanesboro 

 (Winstow). Noted by Dewey in Pittsfield in 1829. 



PETASITES. Sweet Coltsfoot. 



P. palmatus (Ait.) Gray. — Wooded bord ers of cold swamps; rare. 

 Williamstown (Churchill); Pittsfield. 



PRENANTHES. Rattlesnake-root. 

 {Nahalus 111. Fl. ed. 2.) 



P. alba L. White Lettuce ; Rattlesnake-eoot. — Rich woods; 

 common in the valley, infrequent on the plateau. 



P. altissimaL. — Rich woods; frequent. 



var. hispidula Fernald. — Rich woods; occasional. Lenox; Otis; 

 Stockbridge; Sheffield (Walters). 



