384 MINNESOTA BOTANICAL STUDIES. 



Urticastrum divaricatum (L.) Kuxtze, Rev. Gen. PL 635. 

 1891. 

 Coll.: Lyon 117, Winnebago; 358, Jefferson. June, 

 Aug. 

 Adicea pumila (L.) Raf. ; Torr. Fl. N. Y. 2 : 223. As syn- 

 onym. 1S43. 

 Coll.: Wheeler 327, Mayville ; 653, Jefferson. July, 

 Aug. 



Parietaria pennsylvanica Muhl. ; Willd. Sp. PI. 4; 955. 

 1806. 

 Coll. : Lyon 191, Crooked Creek. July. 



SANTALACEiE. 



Comandra umbellata (L.) Nutt. Gen. i : 157. 1818. 

 Coll. : Lyon 90, Winnebago. June. 



ARISTOLOCHIACEiE. 



Asarum canadense L. Sp. PI. 442. 1753. 

 Coll. : Wheeler 57, Winnebago. June. 



POLYGONACEiE. 



Rumex acetosella L. Sp. PL 338. 1753. 

 Coll. : Lyon 130, Winnebago. June. 



Rumex crispus L. Sp. PL 335. 1753. 



Coll. : Lyon 127, 158, Winnebago. June. 



Polygonum hartwrightii A. Gray, Proc. Am. Acad, 8 : 294. 

 1870. 

 Coll. : Wheeler 606, Brownsville. Aug. 



Polygonum emersum (Michx.) Britton, Trans. N, Y. Acad. 

 Sci. 8 : 73. 1879. 

 Coll. : Wheeler 394, 458, Jefferson. Jul}-, Aug. 



Polygonum incarnatum Ell. Bot. S. C. & Ga. i : 456. 1817. 

 Coll. : Wheeler 419, Jefferson. July. 



Polyonum hydropiper L. Sp. PL 361. 1753. 

 Coll. : Lyon 494, Jefferson. Aug. 



Polygonum punctatum Ell. Bot. S. C. & Ga. i : 455. 181 7. 

 Coll. : Wheeler 537, 539, Jefferson. Aug. 



Polygonum orientale L. Sp. PL 362. 1753. 

 Coll. : Wheeler 448, Jefferson. Aug. 



