386 MINNESOTA BOTANICAL STUDIES. 



AUionia linearis Pursh, F1. Am. Sept. 728. 1814. 

 Coll. : Wheeler 392, Jefferson. July. 

 Not previously collected in Minnesota. Collections Oest- 

 lund 155 and Herrick 256, Minneapolis, in the Herbarium 

 of the University and reported in Metasperma^ of Minne- 

 sota Valley as A. linearis Pursh ? should be A. Jiirsitta 

 Pursh. 



AIZOACE^. 



Mollugo verticillata L. Sp. PI. 89. 1753. 



Coll. : Lyon 279, 302, Jefferson. July, Aug. 



CARYOPHYLLACE^. 



Silene stellata (L.) Ait. f. Hort. Kew. 3: 84. 181 1. 



Coll. : Lyon 254, Wheeler 508, Winnebago. July, Aug. 



Silene alba Muhl. Cat. 45. 1813. 



Coll. : Lyon 164, Winnebago. June. 

 The only previous collections from Minnesota are from 

 Goodhue and Winona counties. Frequent along Winne- 

 bago and Crooked creeks. 



Silene antirrhina L. Sp. PL 419. 1753. 



Coll. : Wheeler 171, Winnebago. June. 



Cerastium longipedunculatum Muhl. Cat. 46. 18 13. 

 Coll. : Lyon 8, Winnebago. June. 



NYMPHiEACE^. 



Nymphaea advena Soland. in Ait. Hort. Kew. 2 : 226. 1789. 

 Coll.: Wheeler 307, Crooked Creek; 454, Jefferson. 

 July, Aug. (Plate XXVH., B.) 

 Castalia tuberosa (Paine) Greene, Bull. Torr. Club, 15: 

 84. 1888. 

 Coll. : Wheeler 293, 439, 496, Jefferson. July, Aug. 

 Nelumbo lutea (Willd.) Pers. Syn. i : 92. 1805. 

 Coll. : Wheeler 409, 494, Jefferson. Jul}', Aug. 

 Abundant in the sloughs of the Mississippi river at Jefferson. 

 (Plate XXV., A.) 



CERATOPHYLLACEiE. 



Ceratophyllum demersum L. Sp. PI. 992. 1753. 

 Coll. : Lyon 367, 480, Jefferson. Aug. 

 Common in the sloughs of the Mississippi river at Jefferson 

 and Crooked Creek. 



