PLANTS OF NORTH ELBA IO9 



destroyed. If it has become abundant it may be subdued by an appli- 

 cation of salt. Putting the infested field under thorough cultivation will 

 also overcome it to some extent. 



Hieracium Canadense Mx. 



Canada hawkweed. Sharp tooth hawkweed. 



Thin woods and bushy places. Rare. Raybrook. August and 

 September. 



Hieracium scabrum Mx. 

 Rough hawkweed 



Dry soil in pastures and clearings. Common. August. This is the 

 prevailing species of hawkweed in North Elba. 



Hieracium Pilosella L. 



Pilose hawkweed 



Found by Mrs Bodman in a dooryard at Lake Placid. It is an intro- 

 duced plant and perhaps is not permanently established, 



Nabalus altissimus (Z.) Hook. 



Prenanthes altissima L. 



Fall prenanthes. tall white lettuce 



Woods and open places. Common. August and September. This 

 species and the next following one are very variable in the shape and 

 lobing of the leaves. 



Nabalus albus (L.) Hook. 



Prenanthes alba L. 



White lettuce. Rattlesnake root 



Habitat and general appearance of the plant like the last. Its pappus 

 however is darker colored and its long involucral scales are more 

 numerous. August and September. 



Nabalus trifoliatus Cass. 



Tall rattlesnake root 



Thin woods. Occasional. Wood farm and Indian pass. August. 



