180 FLORA OF WINNESHIEK COL'NIY. 



tfichx Slender Kuotweed. Locally com- 

 mon in dry sandy soil. Dec rah (Holway), the St. Peter sand- 

 region near Hesper. 



Polygonum douglasii Greene. Douglas' Knotweed. (Not 

 included in Gray.) With the preceding in the vicin 

 per, and even more abundant 



Polygonum convolvulus L. Black Bindweed. A common 

 introduced I dinar, 1 1- 



Polygonum scandcns L. (P. dumetorum var. scandens Gray.) 

 Climbing False Buckwheat. Report. -d by Fitzpatrick. 



Polygonum sagittotum L. Arrow-leaved Tear-thumb. In low 

 grounds. Reported by Fitzpatrick. 



Order 8. Chenopodiale*. 

 family I. Chtnopodiacea. 



opodium album L. Lamb's Quarters. A common intro- 

 duced weed. Reported by Fitzpatrick. 



Chenopodium glaucum L. Oak-leaved Goosefoot. A common 

 introduced weed. Calmar. 



Chenopodium hybridum L. Maple-leaved Goosefoot. Common 

 in woods. Decorah. 



Salsola tragus. Russian Thistle. Introduced. Not common. 

 Calmar. 



Salsola kali L. Salt-wort. 



Family 2. Amaranthacea. 



Amaranthus retroflexus L. Rough Pigweed. A very com- 

 mon introduced weed. Ft. Atkinson, Decorah (Goddard). 



Amaranthus blitoides S. Wats. Prostrate Pigweed. Intro- 

 duced from the west A common weed. Ft. Atkinson, etc. 



family 3. Xyctaginaaae. 



Allionia nyctaginea Michx. {Oxybaphus nyctagineus Sweet) 

 Wild Four-o'clock. Common in dry open places. Calmar. 



Family 4. Azoiacea. 



Mollugo verHciUata L. Carpet-weed Common in sandy and 

 grounds. Ft Atkinson. 



family 5. PortuL:. 



Claytonia virginica L. Spring Beauty. In rich alluvial 

 woods. (Fitzpatrick.) 



