XXXV. NOTES ON SOME PLANTS OF ISLE 

 ROYALE. 



W. A. WHEELER. 



During August, 1900, I spent about two weeks at Tobin Har- 

 bor on the eastern end of Isle Royale, Mich. At this time I 

 made a collection of plants numbering about 150 species, of 

 which the following seem to be worthy of note. 



Botrychium lunaria (L.) Sw. Schrad. Journ. Bot. 2 : no. 1800. 

 Rare in moist woods and thickets. 



Botrychium virginianum (L.) Sw. Schrad. Journ. Bot. 2 : in. 



1800. 



Prothallia and young sporophytes were collected in a thicket 

 near the shore of the lake on Aug. 30. Previous collections of 

 the prothallia of this species have been made only by Professor 

 Douglas H. Campbell at Grosse Isle, Michigan, in 1893 and by 

 Professor E. C. Jeffrey at Little Metis, Quebec, Canada, in 

 1895. 



Woodsia ilvensis (L.) R. BR. Trans. Linn. Soc. n : 173. 1812. 

 Very common on exposed rocks along the lake shore. 



Dryopteris fragrans (L.) SCHOTJ, Gen. Fil. 1834. 

 Common on exposed rocks with Woodsia ilvensis. 



Cryptogramme acrostichoides R. BR. App. Franklin's Journ. 



767. 1823. 



Infrequent on rocks. This is probably one of the rarest ferns 

 of the Great Lake region. 



Lycopodium selago L. Sp. PL 1102. 1753. 

 Frequent on rocks near the shore. 



Selaginella selaginoides (L.) LINK, Fil. Hort. Berol. 158. 1841. 

 Frequent on moist, shaded rocks near the water's edge on the 

 shore of the harbor. 



619 



