SCHOOLCRAFT COUNTY AND VICINITY 121 



everlasting. Sweet balsam. In dry or clamp open ground. Apparently 

 infrequent. 



'Gnaphalium decurrens Ives. Clammy everlasting. Dry open ground 

 especially in clearings. Frequent. 



Gnaphalium uliginosum L. Low cudweed. In damp or dryish open 

 ground. Often a field weed. Frequent. 



Iva xanthifolia Nutt. Bur weed marsh elder. West of Manistique 

 near Cooks. Plants large and thrifty. Apparently introduced from the 

 west. Not noticed elsewhere in Schoolcraft County. 



Ambrosia trifida L. Great ragweed. In cities and villages as a weed. 

 Not common. 



Ambrosia artemisiifolia L. (A. elatior L.). Common ragweed. Be- 

 coming common as a weed in fields. 



Ambrosia psilostachya DC. Western ragweed. Becoming established 

 in cities and villages as a perennial weed. 



Xanthium canadense Mill. (X. americanum Walt.). American cockle- 

 bur. As a weed in cities and villages. Apparently infrequent. 



Rudbeckia hirta L. Yellow daisy. Black-eyed Susan. Dry open 

 ground. Frequent and noticed in cultivated fields. 



Lepachys columnaris (Sims) T. & G. Prairie cone-flower. In cities, 

 villages and along railroads. Introduced from the west and apparently 

 infrequent. Cornell. 



Bidens frondosa L. Beggar-ticks. Mostly a weed in damp open 

 ground. Frequent. 



Bidens cernua L. Nodding bur-marigold. In low wet ground and 

 swamps. Often abundant. 



Achillea millefolium L. Common yarrow. Open dryish ground every- 

 where. Mostly a weed. 



Anthemis coiula L. Mayweed. In cities, villages, on roadsides, and 

 about dwellings. Often abundant. 



Chrysanthemum pinnatifidum Lecoq. & Lamotte. Ox-eye daisy. Be- 

 coming well established along roads, in pastures and all cultivated 

 grounds. 



Chrysanthemum balsamita ianacetoides Boiss. (C. balsamita L.). 

 Costmarjr. Occasionally escaping to roadsides and persisting. Frequent. 



Tanacetum vulgare L. Common tansy. Occasionally escaping io roa< 1- 

 sides and persisting. 



Tanacetum huronense Nutt. Lake Huron tansy. Sandy beaches of 

 Lake Michigan and Lake Superior. Often plentiful. 



Artemisia caudata Michx. Tall wormwood. Sandy beaches of Lake 

 Michigan and Lake Superior. Occasional on interior sand ridg 

 Plentiful. 



Artemisia vulgaris L. Common mugwort. In waste places of cities 

 and villages. Frequent. Occasional in open woods. 



