520 MINNESOTA BOTANICAL STUDIES. 



SPARGANIACEAE. 



Sparganium androcladuni (Engelm.) Morong. Bull. Torr. 



Bot. Club. 15:78. 1888. 

 Wet places. July. No. 654. 



Sparganium eurycarpum Engelm. in A. Gray Man. Ed. 2. 

 430. 1856. 

 Wet places. Itasca county. August. No. 757. 



Sparganium simplex Hudson. Fl. Angl. Ed. 2. 401. 1788. 

 Wet places. Lake Itasca. No. 1182. 



NAIADACEAE. 



Potamogeton amplifolius Tuckerm. Am. Jour. Sci. (II.) 

 6:225. 1848. 

 In water. Center City. July. No. 666. 



Potamogeton fluitans Roth. Fl. Germ. 1. 72. 1758. 

 In water. Itasca and Aitkin counties. Aug. Nos. 744, 814. 



Potamogeton pectinatus L. Sp. PI. 127. 1753. 



Shallow water. Minnetonka; Lake Itasca. July. Nos. 637, 

 1189. 



Potamogeton perfoliatus L. Sp. PI. 126. 1753. 



Ponds. Minnetonka; Sandy lake. July, August. Nos. 636, 

 801. 



Potamogeton pusillus L. Sp. PI. 127. 1753. 



Shallow ponds. Thompson; Sandy lake. July. August. 

 Nos. 562, 800. 



Potamogeton robbinsii Oakes. Hovey's Mag. 7 : 180. 1841. 

 Ponds. Center City. July. No. 652. 



Potamogeton zosteraefolius Schumacher. Enum. Saell. 50, 

 168. 1801. 

 Ponds. Minnetonka. July. No. 638. 



Naias flexilis Willd. Rostk. and Schmidt. Fl. Sed. 384. 



1824. 

 In water. Minnetonka. July. No. 639, in part. 



JUNCAGINACEAE. 



Triglochin maritima L. Sp. PI. 339. 1753. 



Spruce bogs. Partridge river; Lake Itasca. July. Nos. 

 519, 1203. 

 Scheuchzeria palustris L. Sp. PI. 338. 17 53. 



Bogs. Partridge river. July. No. 520. 



