CATALOG OF PLANTS. 117 



825. Gnaphalium decurrens 'Ives. Clammy everlasting.— Occasional 



on open sandy ground, often with Gnaphalium polycephalunt. 



826. Gnaphalium uliginosum L. Low cudweed. — Fretjuert in dry 



ditches, low ground, and along roadsides. Often abundant 

 as a weed in cultivated fields. 



827. Inu'a helenium L. Elecampane. — Occasional along roadsides 



and in ])astures. 



828. Silphium terebinthinaceum Jacci. Prairie dock. — Common and 



in many places abundant on prairie-like ground between Bay- 

 port and Sebewaing, often invading cultivated fields and be- 

 coming a troul:)lesome weed. 



829. Ambrosia trifida L. Great ragweed. — As a weed in waste places 



at Port Austin. 



830. Ambrosia artemisiaefolia L. Ragweed. — Common as a weed in 



villages and adjacent fields. 



831. Xanthium canadense Mill. American cocklebur. — Occa.sional 



in moist open or shaded places. 



832. Xanthium echinatum ^lurr. Beach clotbur. — Occasional on 



or near the lake shore; more frequent in the streets of the vil- 

 lages. 



833. Heliopsis helianthoides (L.) Sweet. Ox-eye; false sunflower. 



— Occasional on banks of small streams and in damp places 

 ])eIow Grindstone City. 



834. Rudbeckia hirta L. Yellow daisy; black-eyed-susan. — Fre- 



quent on light sandy ground and occasional on shaded sand 

 dunes. l)ut nowhere abundant. 



835. Rudbeckia laciniata L. Tall cone-flower. — The cultivated form 



known as "golden glow." In low damp ground l)elow Grind- 

 stone City. 



836. Helianthus annuus L. Common sunflower. — Noticed as an oc- 



casional escape in the villages. 



837. Helianthus giganteus L. Tall sunflower. — Occasional in damp 



o]>en ground. Not al:)undant. 



838. Helianthus divaricatus L. Woodland sunflower. — Common in 



dry open woods, on flat sandy land and on shaded sand dunes. 



839. Helianthus strumosus L. Pale-leaved wood sunflower. — In open 



dry woods on Charity Island antl near Port Austin. Ap- 

 jiarently infreciuent. 



840. Helianthus tracheliifolius Mill. Throatwort sunflower. — In dry 



ground north of Rush Lake. Apparently rare. 



841. Helianthus tuberosus L. Jerusalem artichoke. — Ob.served only 



in cultivation. 



