Shafer : Vascular Flora of Allegheny County. 69 



ACHILLEA Linnaeus. 



* A. Millefolium Linnaeus. Yarrow. 



CHRYSANTHEMUM Linn.xus. 



* C. Leucanthemum Linnaeus. Ox-eye daisy. 



* C. Parthenium Persoon. Feverfew. 



Moon Township, roadside near Carnot, July, 1898. 



TANACETUM Linn^us. 



* T. vulgare Linn^us. Tansy. 



ARTEMISIA Linnaeus. 



* A. Absinthium Linnaeus. Wormwood. 



About old gardens. 



* A. Abrotanum Linnaeus. Southernwood. 



Pittsburgh, A. V, R. R., near Morningside, September, 1888, 

 Dr. Ziegler. 



* A. biennis Willdenow, Biennial wormwood. 



Pittsburgh, Butler St., near 56th St., August, 1885. 

 Allegheny, Brighton Road. October, 1889. 



SENECIO Linnsus. 

 f S. vulgaris T^innaeus. Common groundsel. 



* S. aureus Linnaeus. Golden ragwort. 



* S. Balsamitae Muhlenberg. Balsam groundsel. 



SYNOSMA Rafinesque. 

 CACALIA Linnreus. 



* S. suaveolens (Linnaeus). Sweet-scented Indian plantain. 



