396 MINNESOTA BOTANICAL STUDIES. 
ACERACE. 
Acer saccharinum L. Sp. Pl. 1055. 1753. 
Coll.: Lyon 149, Winnebago; 274, Jefferson. June, 
July. 
Acer nigrum Micux. £.) Hist. Arb. Am. 2): 238. f/7. 70. sézee 
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. 
BALSAMINACEZ. 
Impatiens aurea MuHL. Cat. 26. 1813. 
Coll.: Wheeler 328, Mayville. July. 
RHAMNACE. 
Ceanothus americanus L. Sp. Pl. 195. 1753. 
Coll.: Lyon 66, Winnebago; Wheeler 356, Crooked 
Creek. June, July. 
Ceanothus ovatus Desr. Hist. Arb. 2: 381. 1809. 
Coll.: Wheeler 92, Lyon 66%, Winnebago. June. 
VITACEZ. 
Vitis vulpina L. Sp. Pl. 203.) 1753. 
Coll.: Wheeler 139, Winnebago; 344, Crooked Creek. 
June, July. 
Parthenocissus quinquefolia (L.) PLANcH. in DC. Mon. Phan. 
Bi: att 2440. Seoz. 
Coll.: Wheeler 235, Winnebago; Lyon 379, Jefferson. 
June, Aug. 
TILIACEZ. 
Tilia americana L. Sp. Pl. 514. 1753. 
Coll.: Lyon 211, Mayville. July. 
MALVACEZA. 
Malva rotundifolia L. Sp. Pl. 688. 1753. 
Coll.: Lyon 491, Jefferson. Aug. 
