XX. THE PTERIDOPHYTES OF MINNESOTA. 



Harold L. Lyon. 



In his " Catalogue of the Flora of Minnesota " (1884) Upham 

 reports sixty-two Pteridophytes as occurring in the state ; to this 

 list Cheney* has added two species, and Arthur, f MacMillan,J 

 Holzinger,§ Lloyd, || and Wheeler IF one each, making a total 

 of sixty-nine species and varieties. 



The following catalog is mainly a record of the Pterido- 

 phytes in the herbarium of the University which have been col- 

 lected in Minnesota. These specimens, as redetermined by the 

 writer, represent sixty species and varieties, five of which have 

 not previously been reported from the state. 



PTERIDOPHYTA. 

 Order LYCOPODIALES. 

 Family LYCOPODIACE^. 

 Lycopodium selago L. Sp. PI. 1102. 1753. Fir club-moss. 



Reported from the north shore of Lake Superior by Upham, 

 but there are no specimens in the herbarium. 

 Lycopodium porophilum Lloyd & Underw. Bull. Torr. Club, 

 27: 150. 1900. 

 On sandstone ledges. Not previously reported from Min- 

 nesota. 



Herb. : Rosendahl, Minneapolis ; Leiberg, Minneopa Falls. 

 Lycopodium lucidulum Michx. Fl. Bor. Am. 2: 284. 1803. 

 Shining club-moss. 

 Frequent in northern Minnesota, in deep, damp woods. 

 Herb. : Sandberg, Aitkin Co. ; Taylor, Taylor's falls ; Hall, 

 Devils Track river; Bailey, St. Louis river; MacMillan, 

 Brand & Lyon, North-South lake portage. 



*Trans. Wis. Acad. Scien. 9: 247, 248. 1893. 

 tGeol. and Nat. Hist. Survey, Bull. No. 3, 24. 1SS7. 

 $Bull. Torr. Bot. Club, 18 : 13. 1S91. 

 §Minn. Bot. Studies, 1 : 518. 1896. 

 II Bull. Torr. Bot. Club, 26 : 566. 1899. 

 U Minn. Bot. Studies, 2 : 370. 1900. 



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