no 



of the chemical composition of the soil upon plant distribution. 

 There are, however, quite a number of reputedly calcicolous 





Fig. 6. Sand plains at North Haven. Qiiercus ilicifolia and clumps of 

 Andropogon SCO partus in ioreground. In mid-distance an Andropogon "prairie" 

 with scattered trees. View taken in March. 



plants which in Connecticut would appear to be confined to the 

 limestone areas in the western part of the state. Representative 

 of these are : 



Pellia Fabroniana 

 Lophozia hadensis 

 Amhlystegiella confervoides 

 Cratoneuron filicinum 

 Trisetiim spicatum 



Carex Crawei 

 Carex Castanea 

 Lobelia Kalmii 

 Arenaria stricta 



Still other species, although not restricted to limestone, seem to 

 be limited to calcium-containing substrata. Thus, Grimaldia 

 fragrans, Encalypta ciliata, Cryptogramma Stelleri, Asplenium 

 RiUa-muraria, Carex eburnea, and Solidago squarrosa have been 

 found only in the limestone districts and on the trap ridges. 



Although the existence of perceptible climatic differences 

 within the state is unquestioned, it is as yet somewhat problemat- 

 ical to how great a degree the observed vegetational differences 

 have been actuated by atmospheric factors. To a limited extent, 

 however, it has been possible to coordinate more or less definitely 

 with the phenomena of plant distribution meteorological data 



