£96 THE PLANT LIFE OF MAKYLAND 



Helenium autumnale L. Sneezeweed. 



Throughout the state; in moist open situations; common. 



Achillaea millefolium L. Yarrow, Milfoil. 



Throughout the state; in open situations; common. 



Anthemis cotula L. May-weed. 



Throughout the state; in cultivated grounds and waste places; common. 

 Introduced from Europe. 



Chrysanthemum leucanthemum L. Common Daisy. 



Throughout the state; in cultivated grounds and waste places; common. 

 Introduced from Europe. 



Arnica acaulis (L.) B. S. P. Leopard's-bane. 



Baltimore County, Towson (Robert K. Miller). 



Erechtites hieracifolia (L.) Raf. Fire-weed. 



Throughout the state; in cultivated and waste grounds, being particu- 

 larly common in burns and slashes in forests. 



Mesadenia reniformis (Muhl.) Raf. Great Indian Plantain. 



Baltimore County, near Warren (Robert K. Miller). 



Mesadenia atriplicifolia (L.) Raf. Pale Indian Plantain. 



Throughout the state; in forests and open situations; common, except- 

 ing in the sandy portions of the Coastal Zone. 



Senecio tomentosus Michx. Wooly Ragwort. 



Coastal Zone; in forests and open situations; frequent in the southern 

 counties of the Eastern Shore. 



Senecio balsamitae Muhl. Balsam Groundsel. 



Throughout the state; in dry situations; frequent. 

 Garrett County, Oakland (56 I). 



Senecio aureus L. Golden Ragwort. 



Rare in the Coastal Zone; common in the Midland and Mountain Zone_s; 



in moist forests. 

 Garrett County, Oakland (542). 



Senecio obovatus Muhl. Squaw Weed. 



Upper Midland District. 



Arctium minus Schk. Burdock. 



Throughout the state; in cultivated grounds; common. Introduced from 

 Europe. 



Arctium lappa L. Great Burdock. 



Coastal Zone, naturalized from Europe. 



Carduus altissimus L. Tall Thistle. 



Montgomery County, Cabin John (Robert K. Miller). 



