30 FLORA OF WORCESTER COUNTY. 



BiDENS, L. Bur-Marigold. 



frondosa, L. Common Beggar-ticks. Waste grounds. 



connata, Muhl. Swamp Beggar-ticks. Low " 



cernua, L. Smaller Bur-Marigold. Wet places. 



chrysanthemoides, Michx. Larger Bur-Marigold. Swamps. 



Beckii, Torr. Water Marigold. Lake 'Quinsigamond. 



Galinsoga, Ruiz & Pavon. Galinsoga. 



*parviflora, Cav. Worcester, Millbury. 



Anthemis, L. Chamomile. 



*Cotula, DC. May-weed. Roadsides, common. 



Achillea, L. Yarrow. 



Millefolium, L. Common Yarrow. Common. 



Chrysanthemum, Tourn. Ox-eye Daisy. 



*Leucanthemum, L. Ox-eye Daisy. Very common. 



*Parthenium, Pers. Feverfew. Barre. Miss Sara Lane. 

 Tanacetum, L. Tansy. 



*vulgare, L. Common Tansy. Quite common. 



* " " var. crispum. G. E. Stone. 



Artemisla, L. Wormwood. 



*vulgaris, L. Common Mugwort. Worcester. 



Prof. Eaton. 



*Absinthium, L. Wormwood. Worcester. " " 



TussiLAGO, Tourn. Coltsfoot. 



*Farfara, L. Fitchburg. E. A. Hartiocll. 



Senecio, Tourn. Groundsel. 



aureus, L. Squaw-weed. Very common. 



Erechtites, Raf. Fireweed. 



hieracifolia, Raf. Common in burned clearings. 



Arctium, L. Burdock. 



*Lappa, L., var. minus. Roadsides and waste places. 



