(4) Betula lutea Michx., yellow birch. 

 (4) " pumila L., dwarf birch. 



(2, 3) Alnus incana Moench., hoary alder. 



(4) Ulmus americana L., American elm. 



(3, 4) Ruhus hispidus L., low swamp blackberry. 

 (3) 4) " villosus Ait., dewberry. 

 (3, 4) " triflorus Richards, dwarf raspberry. 

 (3, 4) " idaeus L., red raspberry. 



(2*) Rosa Carolina L., swamp rose. ♦ 



(4) Pyrus arhutifolia L., chokeberry. 



(4) Amelanchier canadensis Medic, service-berry. 



(2*) Rhus Vernix L., poison-sumach. 



(2, 3) Ilex verticillata Gray, northern-holly. 



(2, 3) Nemopanthus mucronata Trel., moulitain-hoUy. 



(4*) Acer rubrum L., red maple. 



(2, 3) Rhamnus alnifolia L'Her., swamp buckthorn. 



(4) Tilia americana L., basswbod or American linden. 



(3*) Chamaedaphne calyculata Moench., cassandra. 



(3) Andromeda polifolia L., Andromeda. 



(3, 4) Vaccinium corymbosum L., tall blueberry. 



(i) " macrocarpon Ait., cranberry. 



(2, 3) Cornus stolonifera Michx., red-osier dogwood. 



(3) " canadensis L., dwarf dogwood. 



(4) Nyssa sylvatica Marsh., sour gum. 



(4) Sambucus racemosa L., red^berried elder. 



(4) Lonicera dioica L., swamp honeysuckle. 



Herbaceous Plants 



^ (3,4) 



(3,4) 



(3,4) 



(3*, 4) 



(I*, 2) 



. (3, 4) 



V (2= 



(I] 

 (I] 

 (I' 

 (I] 

 (i: 

 d: 

 (i] 

 d: 

 (i: 

 d: 

 (i] 



Osmunda regalis L., royal fern. 



" Claytoniana L., interrupted fern. 



" cinnamomea L., cinnamon fern. 

 Onoclea sensibilis L., sensitive fern. 

 Aspidium Thelypteris Sw., swamp fern. 



" cristatum Sw., cristate shield fern. 

 Woodwardia virginica Sm., chain fern. 

 Glyceria nervata Trin., manna grass. 

 Zizania aquatica L., wild rice. 

 Dulichium arundinaceum Britton. 

 Eleocharis rostellata Torr., spike-rush. 



" palustris (L.) R. & S., spike-rush. 

 Scirpus validus Vahl., great bulrush. 



" cyperinus Kunth., wool grass. 



" atrovirens Muhl., dark green bulrush. 

 Cyperus strigosus L., straw-colored cyperus. 



" erythrorhizos Muhl. 



" Engelmanni Steud. 

 Eriophorum virginicum L., cotton grass. 

 Cladium mariscoides Torr., twig-rush. 



19 



