SUB-CLASS II. DICOTYLEDONES. 197 



Comus alt erni folium L. f. Alternate-leaved Dogwood. Com- 

 mon on wooded slopes and banks. Decorah, Canoe creek, north 

 fork of Bear creek, Hesper. 



Series II. 



Order 1. Ericales. 



Pat/lily 1. Pyrolacece . 



Pyrola elliptica Nutt. Shin-leaf. Common in deep upland 

 woods. Decorah (Savage), Ft. Atkinson, Canoe creek, Hesper. 



Pyrola secunda L. One-sided Wintergreen. Rare, in deep 

 woods. Hesper, Decorah (Hoi way). 



Chimaphila umbellata (L.) Nutt. Pipsissewa. Rare, in up- 

 land woods. Hesper. 



Family 2. Monotropactoe. 



Mnnotropa unifloraL. Indian Pipe. Very abundant in deep 

 upland woods. Hesper, Canoe creek., 



Hypo pity s americana (DC.) Small. (Monotropa hypopitys 

 L.) Pine-sap. Very abundant in deep upland woods at Hesper. 



Order 2. Primulales. 

 Family 1. Primulacece . 



Steironema ciliatum (L.) Raf. Fringed Loosestrife. Com- 

 mon in wet prairies. Calmar. 



Steironema quadriflorum (Sims.) Hitch. (S. longifolium 

 Gray.) Prairie Loosestrife. In moist low places. Decorah 

 (Goddard). 



Dodecatheon meadia L. Shooting Star. On prairies and 

 treeless ridges. Not rare. (Fitzpatrick.) 



Order 3. Gentianales 

 Family /. Oleacea- 



Fraxinus americana L. White Ash. Fitzpatrick reports this 

 as frequent in rich woods, but the writer saw no specimens which 

 could be so referred with certainty. Most of the specimens 

 reported under this name from Iowa undoubtedly belong to the 

 following species. 



Fraxinus lanceolata Borck. (F. viridis Michx.f.) Green 

 Ash. Common on alluvial grounds, but also extending into 

 upland forests. Decorah, Kendallville. Observed in all the 

 forest-covered parts of the county. 



