MICHIGAN ACADEMY OF SCIENCE. 271 



Composite — Composite Family. 



Eupatorium purpureum L. Joe-Pye Weed. 



Grindelia squarrosa (Pursh.) Dunal. 



Solidago canadensis L. 



Solidago serotina Ait. 



Aster macrophylliis I.. 



Erigeron philadelphictis L. 



Erigeron annuus (I^.) Pers. Daisy Fleabane. 



Erigeron ramosns (Walt.) B S P. 



Erigeron canadensis L. 



Antennaria fallax Greene. 



Antennaria neodioica Greene. 



A'mhrosia artemisiifolia L. 



Rudbeckia hirta L. Black-eyed Susan. 



Helianthus giganteus L. 



Helianthus divaricatus L. 



Coreopsis tripteris L. Tall Coreopsis. 



Bidens tHchosperma (Michx.) Britton. Tickseed Sunflower. 



Achillea Millefolium L. Common Yarrow. 



Anthemis arvensis L. var. agrestis (Wallr.) DC. 



Senecio aureus L. Golden Ragwort. 



Cirsium muticum Michx. Swamp Thistle. 



Cirsium arvense (L.) Sco}^. Canada Thistle. 



Krigia ample xicaulis Nutt. Cynthia. 



Taraxacum erythrospermum Andrz. Red-seeded Dandelion. 



