Holzinger: determinations of plants. 537 



BETULACEAE. 



Corylus americana Walt. Fl. Car. 236. 1788. 



Copses. Centre City; lake Itasca. June, July (fruit). Nos. 

 642, 1059. 



Corylus rostrata Ait. Hort. Kew. 3:364. 1789. 



Copses. The prevailing species around lake Itasca. Also at 

 Vermilion lake. June, July (fruit). Nos. 512, 1028. 



Betula glandulosa Michx. Fl. Bor. Am. 2:180. 1803. 

 Bogs. Partridge river. July. No. 522. 



Betula lenta L. Sp. PL 983. 1753. 

 Woods. Thompson. June. No. 186. 



Betula nigra L. Sp. PI. 932. 1753. 



Marshy ground. Long lake. May. No. 54. 



Betula papyrifera Marsh. Arb. Am. 19. 1785. 



Woods. Thompson. May, June (fruit and leaves). Nos. 

 95, 192. 



Betula puinila L. Mant. 124. 1767. 

 Bogs. Centre City July. No. 648. 



Aluus incaua (L.) Willd. Sp. PI. 4:335. 1805. 



Along banks of creeks. Centre City; lake Itasca. July. 

 Nos. 647, 1220. 



Alnus rugosa (Ehrh.) Koch. Dendr. 2 : 635. 1872. 

 Moist places. Two Harbors. July (fruit). No. 538. 



Aluus viridis (Chaix.) DC. Fl. Fr. 3:304. 1805. 



Along water courses. N. P. Junction; Two Harbors; lake 

 Itasca. May. July (fruit). Nos. 67, 447, 1074. 



URTKACEAE. 



Urtiea gracilis Ait. Hort. Kew. 3:341. 1789. 



Moist places. Lakes Vermilion and Itasca. July. Nos. 

 507, 1202. 



Adicea puinila (L.) Raf. Torr. Fl. N. Y. 2:223. 1843. 

 Moist places. Aitkin county. August. No. 839. 



Parietaria pennsylyanica Muhl. Willd. Sp. PI. 4:955. 1805. 

 Rich shady woods. Minneapolis. May. No. 117. 



SANTALACEAE. 



Comandra umbellata (L.) Nutt. Gen. 1:157. 1818. 

 Dry hills. Lake Itasca. June. No. 1062. 



