Aquilegia canadensis . Wild Columbine. Native. Only one plant seen during 



study. April-July. 



Arabis laevigata . Smooth Bank-cress or Rock-cress. Native. Slopes and 

 bottoms. Frequent. Aoril-Aueust. 



Aralia nudicaulis . Wild Sarsaparilla. Native. Slopes. Frequenc. May-July. 



Arctium minus . Common Burdock. Introduced from Eurasia. Disturbed areas. 

 Common. July-September. 



* Arisaema dracontium . Green-dragon. Native. Said to occur in Lake County. 



Arisaema triphyllum . Jack-in-the-pulpit. Native. Slopes, especially toward 

 bottom. Common. April-July. 



* Asarum canadense . Wild Ginger. Native. Reported to occur in ravines in 



Highland Park, but wild plants not seen during this study. April- June. 



Asclepias exaltata . Poke Milkr^eed. Native. June. 



* Asclepias purpurascens . Purple Milkweed. Native. June-July. 



* Aster sagittifolius . Arrow-leaved Aster. Native. August-November. 



Barbarea vulgaris . Yellow Rocket, Winter-cress. Introduced from Europe. 

 Bottom and stream bed. Infrequent. April-July. 



Caulophyllum thalictroides . Blue Cohosh. Native. Slopes, especially toward 

 the bottom. Locally frequent. April-May. 



Circaea quadrisulcata var. canadensis . Enchanters' Nightshade. Native. 

 July-August . 



Claytonia virginica . Spring Beauty. Native. Slopes. Infrequent. March-June. 



* Conopholis americana . Cancer-root. Native. May- July. A parasite on 

 oak roots. 



Cry^ptotaenia canadensis . Honewort. Native. Common. May-September. 



* Dentaria laciniata . Toothwort, Pepperroot. Native. Slopes. March-May. 



Erigeron annuus . Annual or Daisy Fleabane. Native. Common. A weedy 

 plant in disturbed areas. May-November. 



Erythronium albidum . l^ite Dog-tooth-violet, White Trout-lily. Native. 

 Slopes. Common. March-early May. 



Erythronium americanum . Yellow Dog-tooth-violet, Yellow Trout-lily. Native. 



Slopes. Restricted to certain ravines, but common there. April-early May. 



Eupatorium purpureum . Purple Joe-Pye-weed . Native. July-August. 



Eupatorium rugosum . White Snakeroot. Native. July-October. 



Fragaria virginiana . Wild Strawberry. Slopes. Frequent. April-June. 



Galium aparine . Annual Bedstraw. Native. Slopes and tablelands. Frequent. April, 



Geranium maculatum . Wild Geranium, Wild or Spotted Cranesbill. Native. Slopes. 

 Common. April- July. 



Geum canadense . White or Wood Avens. Slopes. Frequent. June-September. 



Glechoma hederacea c Ground-ivy, Creeping Charlie. Introduced from Eurasia. 

 Sometimes planted as a ground cover in moist, shady areas, but rapidly 

 spreading and becoming a troublesome weed. April-August. 



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