27 



Sparganium eurycurpum Engelm. 



Wet valleys at head of North Loup and near the falls, July 

 20. (224) 

 Lemna minor L. 



In old channel of the North Loup, Cherry county, July 22. 

 (272) 

 Lerinui irisulca L. 



Wet valleys near the head of the North Loup in small ponds. 

 July 19; Marsh Lake, July 26. (260) 

 Alisma plantugo L. 



Wet valleys near the North Loup, July 20, in the North 

 fork, July 2.. (233) 

 Sagitiaria variabilis Engelm. var. angustifolia Gray. 



In the north fork of the North Loup, July 2L (232) 

 *Sagittaria variabilis Engelm. var. diversifolia Gray. 



Small pond in wet valley, Oxyoke ranch, Sheridan county, 

 July 13. (235) 

 Triglochin maritimnm L. 



Wet valley, Sheridan county, July 9. (226) 

 Potamogeton natans L. 



In lake, Hannah's ranch, -Cherry county, July 27. (228) 

 Potamogeton pectinatus L. 



With the preceding ("229) 

 Potamogeton heterophyllus Schreb. var. graminifolius Gray. 



Ponds along the North Loup, Cherry county, July 20. 

 (234) 

 *Naiasfiexilis (Willd.) Kostk & Schm. 



With the preceding (231) 

 Buppia occidentalis Wats. 



Small pond in a wet valley, Sheridan county, July 10. 

 (230) 

 Selaginella rupestris (L. ) Sprang. 



High prairie. Brown county, July 28. (271) • 

 Marsilia vestita Hook. & Grev. 



Small ponds. Box Butte county, July 7. (275) 



