MICHIGAN ACADEMY OF SCIENCE. 115 



98. Poa glauca Vahl. Rock shore crevices and bare burned ridges. 



99. Poa nemoralis L. 



100. Poa triflora Gilib. Fowl Meadow Grass. Burn forest; grass zone, 

 Delta Swamp Succession. 



101. Poa pratensis L. June Grass; Kentucky Blue Grass. Clearings; 

 bare burned ridges; burn forest. 



*102. Glyceria Torreyana (Spreng.) Hitchc. Manna Grass. ''Margin of 

 Siskowit cabin trail bog." Holt. 



103. Glyceria canadensis (Michx.) Trin. Rattlesnake Grass. Bog forest. 



104. Glyceria nervata (Willd.) Trin. Bog forest. 



105. Glyceria borealis (Nash) Batchelder. Delta stream: McCargoe's 

 Cove. 



106. Festuca occidentalis Hook. Fescue Grass. Rock Harbor Light- 

 house. 



107. Festuca ovina L. Sheep's Fescue. Rock shore crevices and bare 

 burned ridges. 



108. Bromus ciliatus L. Brome Grass. Climax forest, brook bank. 



109. Agropyron Smithii Rydb. Burn forest: Park Place. 



110. Agropyron tenerum Vasey. Park Place. 



111. Agropyron caninum (L.) Beau v. Park Place. 



112. Hordeum jubatum L. Squirrel Tail Grass. Clearing: Passage 

 Island Lighthouse. 



Cyperaceae. Sedge Family. 



113. Dulichium arundinaceum (L.) Britton. Edges of bog lakes, infre- 

 quent . 



114. Eleocharis palustris (L.) R. and S. Common Spike Rush. Aquatic, 

 bog lakes. 



115. Eleocharis palustris (L.) R. and S. var. glaucescens (Willd.) Gray. 

 Aquatic, bog lakes. 



116. Eleocharis acicularis (L.) R. and S. Delta Swamp Succession, mar- 

 gin of sedge zone. 



117. Eleocharis acuminata (Muhl.) Nees. Tobin's Harbor. 



118. Scirpus caespitosus L. Most characteristic plant of rock pool mar- 

 gins; also forms the bulk of the sedge mat in some bogs. 



119. Scirpus hudsonianus (Michx.) Fernald. Alpine Cotton Grass. 

 Sedge zone, Bog Succession, frequent. 



120. Scirpus subterminalis Torr. Aquatic, Delta Swamp Succession. 



121. Scirpus validus Vahl. Common Bulrush. Aquatic: sheltered coves 

 and bog lakes. 



122. Scirpus rubrotinctus Fernald. Brook bank: Ransom Clearing. 



123. Scirpus atrocinctus Fernald. Edges of rock pools and other swampy 

 habitats. 



124. Eriophorum callitrix Cham. Cotton Grass; Hare's Tail. Sedge and 

 sphagnum zones, Bog Succession, frequent. 



125. Eriophorum tenellum Nutt. Slender Cotton Grass. Sedge and 

 sphagnum zones, Bog Succession. 



126. Eriophorum viridi-carinatum (Engelm.) Fernald. Tall Cotton Grass. 

 Sedge and sphagnum zones. Bog Succession. 



127. Rhynchospora alba (L.) Vahl. White Beak Rush. Sedge zone. Bog 

 Succession frequent . 



128. Cladium mariscoides (Muhl.) Torr. Twig Rush. Sedge Zone, Bog 

 Succession: Sucker Lake. 



