552 MINNESOTA BOTANICAL STUDIES. 



Acalypha virginica L. Sp. PI. 1003. 1753. 

 Waste places. Minneapolis. September. No. 953. 



ANACARDIACEAE. 



Rhus glabra L. Sp. PL 265. 1753. 



Copses. Cannon Palls; Thompson; N. P. Junction. July. 

 Nos. 349, 401, 921. 



No. 401, of which No. 921 is the fruit collected in August, is 

 a peculiar dwarf form. It blooms when only 6 inches high. 

 The leaflets are only 7 to 11, of the texture and shape of Rhus 

 glabra. The fruit is hispid as in Rhus typhina. Dr. S. Watson 

 and Dr. John Coulter, to whom specimens of this form were 

 sent, pronounced it a form of Rhus glabra, with the fruit of 

 R. typhina. And both were inclined to consider these two 

 species as one, with this dwarf Minnesota plant as an inter- 

 mediate form connecting them. 



Rhus radicans L. Sp. PI. 266. 1753. 

 Sandy soil. Thompson. July. No. 541. 



ACERACEAE. 



Acer ruorum L. Sp. PI. 1055. 1753. 



Rocky woods. St. Louis river, and N. P. Junction. May, 

 June. Nos. 22, 157. 



Acer spicatum Lam. Ency. Meth. 2:381. 1786. 



Wooded bluffs. Thompson, and lake Itasca region. June, 

 July. Nos. 124, 426, 1218. 



BALSAMINACEAE. 



lmpatiens biflora Walt. Fl. Car. 219. 1788. 

 Swales. Lake Itasca. July. No. 1232. 



lmpatiens aurea Muhl. Cat. 261. 1813. 



Springy places. Minneapolis. September. No. 960. 



RHAMNACEAE. 



Ceanothus americauus L. Sp. PL 195. 1753. 



Copses. Aitkin and Crow Wing counties. August. Nos. 

 848, 859. 



TITACEAE. 



Vitis cordifolia Michx. Fl. Bor. Am. 2: 231. 1803. 



Copses. Center City, and Minneapolis. July, September. 

 Nos. 641, 963. 



