42 THE BIOLOGY OF HARDING COUNTY 



127 Hnogonum nmlticeps Nees. 



Frequent on the steppe, abundant on sand where also the 



largest individuals are obtained. 

 *I28 Eriogonum Visheri A. Nels? Dakota Eriogonum. 



Abundant on the steppe near Rabbit Butte, Perkins County. 



"As far as I can see now a good strong species; will describe 



it soon." Professor Nelson. 



129 Polygonum articular e L. Door-yard Weed, Knot-grass, 



Goose-Grass. 

 Not rare along 'streams in all parts of the area. 



130 Polygonum convolvulus L. 



Uncommon on moist ground in the forested hills. 



131 Polygonum Douglasii Greene. 

 Locally common on plains. 



1.32 Polygonum crnersum (Michx) Brit. 



P. muhlenbergia 



Tolerably common in water holes. (Perkins County). 



[Polygonum erectum L. Erect Knot weed. 



Reported by Fromme.] 

 :!:][ 33 Polygonum exsertum Small. 



Open woods in the Little Missouri Valley near routes of 



travel. 



[Polygonum lapathifolium L. 



Reported by Fromme.] 

 134 Polygonum pennsylvanicum L. 



Tolerably frequent in water holes and along streams. 

 T 35 Polygonum persicaria L. 



Fairly frequent on springy soil in Little Missouri Valley. 



[Polygonum ramorissimum Michx. 

 Recorded by Fromme.] 



136 Polygonum scandens L. Climbing False Buckwheat. 

 Sparingly introduced. 



[Polygonum tenue Michx. 

 Taken by Fromme.] 



137 Rumex me.ricanits Meisn. 



Local on waste moist ground abundant on Soft Water Creek 

 r.iar Redig. 



