STATE GEOLOGIST. 321 



Mackinac 'island, Bittersweet (Solarium dulcamara), the Brittle 

 Willow (Salix fragilis), and the Lombardy Poplar (Populus 

 dilaldta). 



A very considerable number of our wild plants are known to 

 possess medicinal properties. Fourteen of the naturalized 

 species fall into this category, viz: Toad Flax, Butter Caps, 

 Black Mustard, Horse Eadish, Spotted Hemlock, Elecampane, 

 Bittersweet, (Solarium dulcamara), Jamestown Weed or Stra- 

 monium, Henbane, Great Mullein, Horehound, Peppermint, 

 Wormseed, and Hemp. A more considerable number of our 

 native plants hold an established place in the pharmacopoeia, 

 viz: Flowering Dogwood (Cornus florida), Spotted Cranesbill 

 (Geranium maculatum), Butternut (Juglans cinerea), Mandrake 

 (Podophyllum pellatum), Goldthread (Copiis trifolia), Black 

 Snakeroot (Gimcifuga racemosa), Creeping Spear wort ( Ranun- 

 culus fiammula var. reptans), Tulip tree (Liriodendron tulipir 

 fera), Bloodroot (Sangumaria Canadensis), Seneca' Snakeroot 

 (Polygala Senega), Wood Sorrel (Oxalis stricta), Poison Ivy 

 (Rhus toxico dendron), Indian Physic (Gillenia trifoliata), Wild 

 Black Cherry (Prunus serotina), Ginseng (Panax quinquefo- 

 Hum), Dandelion (Taraxacum dens-leonis), Lobelia (Lobelia in- 

 ftata), Wintergreen (Gaultheria procumbens), Bearberry (Arc- 

 tostaphylos uva-vrsi), Prince's Pine (Chimaphila umbeUata), Spice 

 Bush (Benzoin odoriferum), Pleurisy Eoot (Asclepias luberosa), 

 Buckbean (Menyanthes trifoliata), Sassafras (Sassafras officin- 

 ale), Hops (Humulus lupulus), Slippery Elm ( Vlmus fulva), 

 Juniper (Juniperus communis), Sweet Flag (Acorus calamus) 

 Wild Turnip (Ariscema Iriphyllum), Columbo (Frasera caroli- 

 nensis), which is different from the imported Columbo, Prickly 

 Ash (Zanthoxylum Americanum), Agrimony (Agrimonia eupa- 

 toria). Fever Root (Triosteum perfoliatum), Black Alder (Ilex 

 verticillata), Culver's Physic (Veronica Virginica), Pennyroyal ' 

 (Hedeoma pulegioides), Dogbane (Apocynum androecemifolium), 

 Wild Ginger (Asarum Canadense), Pokeweed (Phyiolocca de- 

 eandra), Brake (Pteris aquilina), Wood Fern (Aspidium Nove- 

 ll 



