346 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
LAPSANA. NippLK-wouT. 
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 Hawkhit. 
L. AUTUMNALis L. Fat.l Dandelion. — Grassland; occasional. 
Williamstown; Lenox; Hinsdale; Washington. 
Locally common in Williamstown, and the eastern part of Hinsdale. 
LEPACHYS. 
(Ratihida 111. Fl. ed. 2.) 
L. PiNNATA (Vent.) T. & G. Cone-flower. — Long established for 
many rods along a dry roadside bank in Lenox. 
MATRICARIA. Wild Chamomile. 
M. Chamomilla L. — Adventive, Cheshire (Winslow) . 
M. suAVEOLENS (PuTsh) Buclienau. 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 pasture, Lanesboro 
(Winslow). Noted by Dewey in Pittsfield in 1829. 
PETASITES. Sweet Coltsfoot. 
P. palmatus (Ait.) Gray. — ■ Wooded bord ers of cold swamps; rare. 
W'illiamstown (Churchill); Pittsfield. 
PRENANTHES. Rattlesnake-root. 
(Nabalus 111. Fl. ed. 2.) 
P. alba L. W'hite Lettuce; Rattlesnake-root. — 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). 
