72 BOTANY OF MICHIGAN 



Chrysanthemum leucanthemum pinnatifidum .Lecoq & Lamotte. Ox- 

 eye-daisy. From Bay County to St. Ignace, Mackinac County. A per- 

 nicious weed in Cheboygan County. 



Chrysanthemum parthenium (L.) Bernh. Common feverfew. Waste 

 places of cities and villages. Apparently not a permanent escape. 



Chrysanthemum balsamita tanacetoides Boiss. Costmary. Well estab- 

 lished throughout as an escape, usually in dry open ground, along roads 

 and in old fields. Frequent. 



Tanacetum vulgar e L. Common tansy. Roadsides and about cities 

 and villages as an escape throughout. Frequent. 



Tanacetum huronense Nutt. Lake Huron tansy. On and near sandy 

 beach of Lake Huron from Alpena to St. Ignace. Plentiful. Often 

 abundant. 



Artemisia caudata Michx. Tall wormwood. Sandy beaches of Lake 

 Huron throughout, and often in open sandy ground and on sandy ridges 

 in the interior. Plentiful. 



Artemisia abrotanum L. Southernwood. Persisting near Alpena in 

 dry open ground. Apparently infrequent. 



Artemisia pontica L. Roman wormwood. Along roads near Mio, 

 Oscoda County. Apparently infrequent. 



Artemisia stelleriana Bess. Beach wormwood. Sandy open ground as 

 a permanent escape from Bay County to St. Ignace. Often on sand 

 dunes. 



Artemisia biennis Willd. Biennial wormwood. Dry or damp open 

 ground in and about cities and villages. Frequent. 



Artemisia absinthium L. Wormwood. Dry open ground about cities 

 and villages. Frequent. 



Petasites palmatus (Ait.) Gray. Palmate-leaf sweet coltsfoot. In 

 rich open or shaded ground from Bay County to St. Ignace and on 

 Mackinac Island, Mackinac County. Frequent and often plentiful. 



Erechtites hieracifolia (L.) Raf. Fireweed. Usually in rich open or 

 shaded ground and noticed from Bay County to St. Ignace, Mackinac 

 County. Frequent. Abundant on burnt over ground. 



Senecio vulgaris L. Common groundsel. Noticed as abundant about 

 the village of Mackinac Island, Mackinac County. 



Senecio aureus L. Golden ragwort. In wet and marshy open or shaded 

 ground throughout. Frequent. Often plentiful. 



Senecio balsamitae Muhl. Balsam groundsel. In dry open or shaded 

 ground, mostly on or near sand}^ beach of Lake Huron. Frequent 

 throughout. 



Arctium minus Bernh. Common burdock. Cities, villages and gen- 

 erally in cultivated grounds. Often in open woods, like a native plant. 

 Plentiful. 



