HOFFMANN: FLORA OF BERKSHIRE COUNTY. 



361 



Observations on Soil Relations. 



Observations made during one season with the field set devised by 

 Mr. E. T. Wherry for testing the alkaHnity and acidity of the soil 

 are given below. 



Plants Growing in Leaf Mould 



Caulophyllum thalictroides in mucky pocket 



" " from slopes of Greylock, alt. 2600 ft. 



Athyrium angustifolium 



u u 



Dentaria laciniata 



Thelypteris Goldiana 



Viola canadensis ] 



Hepatica acutiloba 



Viola renifolia, var. Brainerdii 



Mitchella repens 



Cypripedium pubescens (alt. 1700 ft.) 



Reaction 



10 + alk. 



3 + ac. 

 10 + alk. 



3 + alk. 



7 + alk. 



3 + alk. 



neutral 

 3 + acid 



Plants Growing in Low Meadows and the Edges of Bogs 



Juncus Dudleyi 



Viola affinis 



Selaginella apoda {S. apits Man. ed. 7) 



(I u 



Solidago patula (four localities) 



Lobelia Kalmii 



Cypripedium hirsulum 



Pamassia caroliniana (two localities) 



a II a u 



Sarracenia purpurea 



« « , . 



Menyanthes trifoliafa 

 Vacdnium niacrocarpon 

 Vaccinium pennsylvanicum 



(on mossy log in calcareous marsh) 

 Juncus marginatus 

 Car ex aurea 

 Ledum groenlandicum 

 Polcntilla frnticosa 

 Drosera rotundifolia 



Mitella nuda 



10 + alk. 



10 + alk. 

 7 + alk. 

 neutral 

 neutral 

 neutral 

 neutral 



10 + alk. 



3 + alk. 

 3 + alk. 

 3 + ac. 

 3 + alk. 

 3 + alk. 



3 + acid 

 neutral 

 3 + alk. 

 7 + acid 

 10 + acid 

 10 + acid 

 3 + acid 

 neutral 



