X \ 1 1 



INTRODUCTION. 



PotanioKfton ampUfolius. 

 foliosiis. 

 Friesli. 

 later.-.li-. 



Potamogeton puslllus. 



zosteraefoHus. 

 IJanutirulus circinaius. 



Pink llii.i, 



Xoiih (»!' (.Cascade Springs is a precipitouw bin IV, 150 feet above 

 the Thornapple River, composed chiefly of white sand. Here are 

 found: 



Acerates viridiflora. 



Asclepias obtusifolia. 



Aster serlceus. 



Bouteloua racemosa. 



Cornus circlnata. 



Eratrrosiis pectlnacea spectabiHs. 



Juniperus Virginiana. 



Monarda punctata. 



Pent^tomon pubcscons. 



Polygonum tenue. 

 Quercus Muhlenbcrgli. 



prinoides. 

 Selaginella rupestris. 

 Solidago rigida. 



rigidiuscula. 

 Sporo bolus cryptandrus. 

 Synthyris Iloughtoniana. 

 Zizia cordata. 



Bt I{T<»\ AVKNUE SmAMI'. 



This swamp extends south-west from South Grand Rapids. At 

 present it covers about 500 acres. Its width varies from one half 

 to three fourths of a mile. The ])ortion south of Burton Avenue 

 is a sphao^nous bog (called Orchid Swamp), sparingly overgrown 

 with low willows, shrubby St. John's-wort, poison sumac, and occa- 

 sional tamarack. This passes into a swampy region which origin- 

 ally contained white pine, hemlock, and occasional arbor-vitae, but 

 in which, at present, black ash, yellow birch, and poison sumac pre- 

 dominate. This in turn is followed by a low swampy tract covered 

 by a tangle of under-brush, mostly spice-bush; thence it passes in- 

 to a white pine tract. The following syjecies have their homes 

 here: 



Aplectrum tiyemale. 

 Arethusa bulbosa. 

 Calopogon pulcbellus. 

 Carex limosa. 



pedunculaia. 

 Clintonia borealis. 

 Corydalis glauca. 

 Cypripedium parviflorum. 

 pubesrens. 



Cypripedium spectabile. 

 Habenaria trideniata. 

 Ledum Groenh.ndicum. 

 Mltella nuda. 

 Poa flexuosa. 

 Kibes rubrum. 

 Salix Candida. 



Viola blandapalustriformi.s. 

 lan''pf>l.'ita. 



