1904] Kennedy, Flora of Willoughby 133 



CHRYSANTHEMUM 



C. LEUCANTHEMUM, L., var. SUKPINNATIFIDUM, Fernald. (See RHODORA, 



v. 181). 

 C. BALSAMITAK, L., var. TAXAC f TOIDES, Boiss. A roadside escape. 



TANACETUM 



T. VULCARE, L. 



T. VULGARE, L., var. CRISPUM, DC- 



ARTEMISIA 



A. Canadensis, Michx. On the cliffs and slides. 



A. ABROTANUM, L. A garden escape. 



A. VULGARIS, L. Said to be a recent introduction from Canada; one farmer 



said within 25 years. 

 A. PONTICA, L. Garden escape on the Long Pond Road. 



TUSSILAGO 

 T. I^ARFARA, L. Abundant. 



PETASITES 



P. palmata, Gray. Considered rare in the swamps, but appeared in 1901 in 

 great abundance at the southern end of lake in the waste sawdust from 

 an old and abandoned saw mill. 



SEN EC I O 

 S. Robbinsii, Oakes. Very Common. 



ERECHTITES 



E. prealta, Raf. E. hieracifolia, Raf. Lake roadside, 1903. Not before 

 reported in the neighborhood, but two plants were observed Oct. i, 1903, 

 near Roaring Brook after the building of a new lake wall -at that part of 

 the roadway. It will be interesting to note if the one plant left uncol- 

 lected will establish a colony. 



ARCTIUM 

 A. MINUS, Bernh. 

 A. LAPPA, L. A. Lappa* var. majus, Gray. 



CIRSIUM (Cnicus of many authors) 



C. LANCEOLATUM, Scop. Carduus lattceolatus, L. 

 C. muticum, Michx. Carduus muttcu* (Michx.) Pers. 

 C. ARVENSE, Scop. Carduus arvensis (L.) Robs. 



