396 MIXXESOTA BOTAXICAL STUDIES. 



ACERACE^. 



Acer saccharinum L. Sp. PL 1055. 1753. 



Coll.: Lvon 149, Winnebago; 274, Jefferson. June, 



Acer nigrum Michx. f. Hist. Arb. Am. 2 : 238. fl. 16. 1810. 

 Coll. : Wheeler 149, Winnebago. June. 



Acer spicatum Lam. Encycl. 2 : 381. 1786. 



Coll.: Wheeler 163, 198, Winnebago; 319, Mayville ; 

 625, Brownsville. June, Aug. 

 Frequent on moist shaded cliffs throughout. 



Acer negundo L. Sp. PL 1056. 1753. 



Coll. : Lyon 119, Winnebago. June. 



BALSAMINACE.E. 



Impatiens aurea Muhl. Cat. 26. 1813. 

 Coll. : Wheeler 328, Mayville. July. 



RHAMNACE^. 



Ceanothus americanus L. Sp. PL 195. 1753. 



Coll. : L3-on 66^ Winnebago : Wheeler 356, Crooked 

 Creek. June, July. 



Ceanothus ovatus Desf. Hist. Arb. 2 : 381. 1809. 



Coll. : Wheeler 92, Lyon 66y2, Winnebago. June. 



VITACE^. 



Vitis vulpina L. Sp. PL 203. 1753. 



Coll.: Wheeler 139, Winnebago; 344, Crooked Creek. 

 June, July. 



Parthenocissus quinquefolia (L.) Plaxch. in DC. Mon. Phan. 

 5: Part 2, 448. 1887. 

 Coll.: Wheeler 235, Winnebago; Lyon 379, Jefferson. 

 June, Aug. 



TILIACE^. 



Tilia americana L. Sp. PL 514. 1753. 

 Coll. : Lyon 211, Mayville. July. 



MALVACE^. 

 Malva rotundifolia L. Sp. PL 688. 1753. 

 Coll.: L3'on 491, Jefferson. Aug. 



