SUB-CLASS II. DlCuTYLEDONES. 195 



Viola papilionacea Pursh. (V. palmata car. cucullata Gray.) 

 Common Blue Violet. Common, 'usually in thickets or along 

 borders, sometimes in open places. Decorah (Savage), etc. 



Viola scabriusctda (T. & G. ) Schwein. (V. pubescens var. 

 scabriuscula T. <.V Q.) Common Yellow Violet. Common in 

 rich alluvial woods. Hesper, etc. 



Viola canadensis L. Canada Violet. Locally common in rich 

 woods, especially on lower banks and slopes, liesper. 



Order 17. Thymelales. 

 framih 1 hymeleaceee . 



Dirca palustris L. Leathenvood. Bare and local. Canoe 

 creek. 



Order 18. Myrtales. 

 family Onagractcs. 



Luduigia poly car pa Short & Peter. Many-fruited Ludwigia. 

 Locally common in wet grounds, often in water. Ft. Atkinson. 



Chamaenerion angustifolium (L.) Scop. (Epilobium angusti- 

 folium L.) Great Willow-herb. Locally common in dry open 

 places. Calmar, Moneek. 



Epilobium coloratum Muhl. Purple-leaved Willow-herb. 

 Common in swampy grounds. Ft. Atkinson. 



Epilobium adenocaulon Haussk. Northern Willow-herb. In 

 wet grounds. Rather common. Decorah. 



Onagra biemiis (L.) Scop. (Enothera biennis L.) Common 

 Evening Primrose. In dry soils and waste places. Common, 

 often a weed. Ft. Atkinson, Calmar, etc. 



Meliolix scrrulata (Nutt.) Walp. {Enothera serrulata Nutt.) 

 In dry places. (Fitzpatrick.) 



('•aura parviflora Dougl. Small-flowered Gaura. Not rare, 

 in dry soils. Ft. Atkinson. 



Circaea lutetiana L. Enchanter's Nightshade. Common in 

 deep woods. Hesper, etc. 



Circaea alpina L. Smaller Enchanter's Nightshade. In deep 

 woods. Not common. Decorah (Goddard), Canoe creek. 



Order 19. Umbellales 

 Family 1 Araliacur 



Aralia racemosa L. American Spikenard. Not rare, in deep 

 upland woods. Decorah. 



Aralia nudicaulis L. Wild Sarsaparilla. Common on rocky, 

 well-shaded banks. Decorah (Savage), etc. 



