518 MINNESOTA BOTANICAL STUDIES. 



OPHIOGLOSSACEAE. 



Botrychium luuaria (L.) Swartz. Schrad. Jour. Bot. 

 2:110. 1800. 

 Wet rocky woods. Two Harbors. July. No. 438. 



Botrychium ternatum (Thunb.) Swartz. var. australe 

 Gray. 

 Woods. Grand Rapids. August. No. 437. 



Botrychium virginianum (L). Swartz. Schrad. Jour. Bot. 

 2:111. 1800. 

 Rich woods and shady banks. Thompson; lake Itasca. July. 

 Nos. 560, 1147. 



EQUISETACEAE. 



Equisetum robustum A. Br. Engelm. Am. Jour. Sci. 46:88. 

 1844. 

 Springy, sandy places. Thompson. June. No. 138. 



Equisetum scirpoides Michx. Fl. Bor. Am. 2:281. 1803. 

 Along streams. Lake Itasca. July. No. 1150. 



Equisetum sylyaticum L. Sp. PI. 1061. 1753. 

 Wet ground. Thompson. May. No. 62. 



Equisetum variegatnm Schleich. Cat. PI. Helv. 27. 1807. 

 Deep ravines. Thompson. May. No. 91. 



FILICES. 



Pellaea atropurpurea (L.) Link. Fil. Hort. Berl. 59. 1841. 

 Sandy cliffs. Cannon Falls. July. No. 379. 



Asplenium fllix-foemina (L.) Bernh. Schrad. Neues Jour. 

 Bot. 1: Pt. 2. 26. 1806. 

 Copses. Two Harbors. August. No. 896. 



Phegopteris dryopteris (L.) Fee. Gen. Fil. 243. 1850-52. 

 Moist rich woods. Silver Creek. August. No. 915. 



Phegopteris phegopteris (L.) Underwood. Small in Bull. 

 Torr. Bot. Club. 20:462. 1893. 

 Woods. Two Harbors. August. No. 895. 



Dryopteris fragrans (L.) Schott. Gen. Fil. 1834. 

 Rocks. Two Harbors. July. No. 461. 



Dryopteris spinulosa (Retz.) Kuntze. Rev. Gen. 813. 1891. 

 Rich woods. Silver Creek. August. No. 917. 



Onoclea sensibilis L. Sp. PI. 1062. 1753. 

 Rich woods. Thompson. July. No. 431. 



