132 Muhlenbergia, Volume g | 
ADENOCAULON BICOLOR Hook. 
Common in the upland forests. 
PSILOCARPUS TENELLUS Nutt. 
Infrequent near Chuckanut bay. 
CENTAUREA CYANUS L. Cornflower. 
Escaped from gardens. 
CARDUUS ARVENSIS (L.) Robs. Canada thistle. 
A common and rapidly spreading weed. . 
GARDUUS-LANGEOLATUS,L... Bull thistle. 
Very common everywhere. 
ui €ARDUUS EDULIS (Nutt.) Greene. Tall thistle. . 
Infrequent in burned over areas. | 
ARCTIUM MINUS Schk. Burdock. 
Common in vacant lots.and along roadsides. 
ct 
Lynden, Washington, September, 1914. 
