114 ' SIXTEENTH REPORT. 



Alismaceae. Water-plantain Family. 



71. Sagittaria latifolia Willd. f. hastata (Pursh) Robinson. Arrow-head. 

 Aquatic, Delta Swamp Succession: McCargoe's Cove. 



72. Sagittaria arifolia Nutt. Bog aquatic. 



73. Sagittaria cuneata Sheldon. Floating Arrow-head. Delta streams: 

 McCargoe's Cove: Hay Bay. 



Hydrocharitaceae. Frog's Bit Family. 



74. Vallisneria spiralis L. Eel Grass. Sheltered coves and delta streams. 



Gramineae. Grass Family. 



*75. Panicum xanthophysum A. Gray. Panic Grass. "Drj- rocky ridges, 

 and rocks with little soil." Holt. 



76. Phalaris arundinacea L. Reed Canary Grass. Sandy beaches, oc- 

 casional. 



77. Oryzopsis pungens (Torr.) Hitchc. Mountain Rice. Rock shore 

 crevices, occasional. 



78. Oryzopsis asperifolia Michx. Rock shore crevices and heath mat. 



79. Muhlenbergia racemosa (Michx.) BSP. Sedge mat, Bog Succession, 

 frequent. 



80. Phleum pratense L. Timothy. Clearings. 



81. Agrostis alba L. Red Top. Shingle beach near Blake Point. 



82. Agrostis hyemalis (Walt.) BSP. Hair Grass. Occasional in a variety 

 of habitats : rock shore crevices ; heath mat ; rock pool margin ; bog sedge mat ; 

 recent burn. 



83. Calamagrostis canadensis (Michx.) Beauv. Blue-joint Grass. The 

 most abundant species in the grass zone of the Delta Swamp Succession; 

 also common on rock shores, in crevices, and around pools; forming a thick 

 growth upon the bare rocks of Gull Islands; characteristic of the marginal 

 zone of bogs. 



*84. Calamagrostis Langsdorfii (Link) Trin. Wheeler. Previouslv col- 

 lected by T. C. Porter. 



85. Calamagrostis hyperborea Lange. Rock shore crevices, frequent. 



86. Cinna latifolia (Trev.) Griseb. Wood Reed Grass. Brook banks in 

 climax forest. 



87. Trisetum spicatum (L.) Richter. Rock shore crevices, frequent. 



88. Deschampsia flexuosa (L.) Trin. Common Hair Grass. Rock shore 

 crevices occasionally, but more commonly in rock openings in the climax 

 forest and on bare burnerl ridges. 



89. Deschampsia caespitosa (L.) Beauv. Rock shore crevices, abundant. 



90. Avena sativa L. Common Oat. Occasional on sand beaches, 



91. Danthonia compressa Austin. Wild Oat Grass. Forbes Lake vicinity. 



92. Danthonia intermedia Vasey. Rock shore crevices; heath mat. 

 *93. Phragmites cummunis Trin. Reed. Washington Creek. Holt. 

 *94. Melica Smithii (Porter) Vasey. "Dr. Robbins, in Grav's Manual." 



Beal. 



95. Melica striata (Michx.) Hitchc. Mehc Grass. 



96. Poa compressa L. Wire Grass. Various xerophytic habitats and 

 clearings. 



97. Poa alpina L. Alpine Meadow Grass. Shore rocks; sheltered cre- 

 vices. 



