212 BOTANY OF MICHIGAN 



Lycopus americaniis Muhl. Cut-leaved water horehound. Abun- 

 dant throughout in damp open or shaded ground. Often producing long 

 vine-like runners near the base of the stem. 



Mentha spicata L. Spearmint. Occasional along roads and near 

 dwellings. 



Mentha piperita L. Peppermint. Frequent in damp places along 

 roads. 



Mentha arvensis canadensis (L.) Briquet. American wild mint. Fre- 

 quent throughout in damp open or shaded ground. 



Collinsonia canadensis L. Stone-root. Noticed in rich damp woods 

 near Murphy's Lake. Probably frequent throughout. 



SOLANACEAE. Nightshade Family 



Solanum dulcamara L. Known mostly in Europe as bittersweet, 

 in Michigan and western Ontario as nightshade. Very common through- 

 out. 



Solanum nigrum L. Common nightshade, frequent in rich open or 

 shaded ground and common as a garden and field weed. Ripe berries 

 not poisonous as formerly supposed. 



Physalis pruinosa L. Strawberry tomato. Noticed in sandy places 

 in northern part of Akron Township by Prof. C. A. Davis. 



Physalis heterophylla Nees. Clammy ground cherry. Frequent 

 throughout in open sandy places. 



Lycium halimijolium Mill. Common matrimoiw vine. Planted 

 about dwellings as an ornamental shrub and inclined to become a per- 

 manent escape in villages and along country roads. 



Datura stramonium L. Stramonium. Occasional in waste places and 

 about villages. Seed poisonous. 



Datura tatula L. Purple stramonium. Occasional in villages and 

 waste places. Also noticed as a weed in bean fields. Seed poisonous the 

 same as the preceding. A few years ago five children in Alpena, Michi- 

 gan, were poisoned from eating the seed. 



SCROPHULARIACEAE. Figwort Family 



Verbascum thapsus L. Common mullein. Occasional along roads and 

 often abundant in old fields and pastures. 



Linaria vulgaris Hill. Butter and eggs. Along roads, about dwellings 

 and occasional as a weed in old fields. 



Linaria canadensis (L.) Dumont. Wild toadflax. Common on sand 

 ridges near the shore of Saginaw Bay. 



Linaria minor (L.) Desf. Small snap-dragon. A recently introduced 

 weed along railroads and in waste places of cities and villages. 



Scrophularia leporella Bicknell. Hare figwort. Noticed in rich open 

 ground near Cat Lake. 



