— 7- 



77- Calliergon Schreheri (Willd.) Grout. The most abundant and widely 

 distributed moss of Isle Royale. Together with Hylocomium proliferum and 

 Hypnum crista-castrensis makes up the bulk of the moss carpet of the climax 

 forest. Also common in the bog forest, and frequently found growing over the 

 sphagnum of open bogs, preventing its further upward growth. The most 

 abundant 'moss of the jack-pine-black-spruce forest, gradually replacing the Cla- 

 donias. Also found in sheltered places upon the rock shores. 



78. Calliergon stramineum (Dicks.) Kindb. Siskowit Lake. 



79. Camptothecium nitens (Schreb.) Schimp. Sedge-sphagnum zone of 

 bogs. 



80. Campylium chrysophyllum (Brid.) Bryhn. Duncan Bay. 



81. Campylium polygamum B. & S.? 



82. Campylium stellatum (Schreb.) Bryhn. Bog forest, frequent; rock 

 pool margin. 



83. Climacium americanum Brid. Bog forest and wet places in climax 

 forest; margins of rock pools. 



84. Climacium dendroides (L.) Web. & Mohr.? Margin of rock pool. 

 Island near Park Place. 



85. Drepanocladus aduncus (Hedw.) Warnst. "Bog at end of Siskowit 

 Bay cabin trail. " Holt. 



86. Drepanocladus fluitans (Dill.) Warnst. Bog on Raspberry Island. 



87. Drepanocladus uncinatus (Hedw.) Warnst. Bog forest, common; 

 climax forest. 



88. Drepanocladus vernicosus (Lindb.) Warnst. Bog near Siskowit Lake. 

 Holt. A moss, probably this species, found as a fossil in sphagnum masses 

 several decimeters below the surface. Raspberry Island. 



89. Eurhynchium strigosum (Hoff.) B. & S. Duncan Bay. Smithwick 

 Island. 



90. Eurhynchium strigosum (Hoff.) B. & S. var. prcEcox (Hedw.) Husnot. 

 Park Place. 



91. Hygrohypnum palustre (Huds.) Loeske? Shore rocks at Park Place. 



92. Hygrohypnum polare (Lindb.) Broth. *' Protected rock crevices, Rock 

 Harbor." Holt. 



93. Hylcccmium proliferum (L.) Lindb. One of the three important mosses 

 of the climax forest; also abundant in the bog forest, and occurs occasionally in 

 many other habitats. 



94. Hylccomium triquetrum (L.) B. & S. Climax forest, frequent; common 

 along its edge and in drier portions. 



95. Hypnum crista-castrensis L. One of the three important mosses of the 

 climax forest, and the most strictly mesophytic in habitat preference. Occurs 

 also in bog forest and occasionally elsewhere. 



96. Hypnum curvifolium Hedw.? Park Place. 



97. Hypnum imponens Hedw. Old burn forest near Forbes Lake, on rotten 

 wood. 



