358 PLANTS, SEEDS, AND CURRENTS 



contrasted in everything but in their compliance with the laws of 

 distribution so well illustrated by Car ex and Sphagnum (pp. 353-4). 



14. Amongst subsidiary matters mentioned in connection with the 

 Carices and the Peat-mosses are those related to the insular factor 

 (p. 343) and the modes of dispersal (p. 354). The insular factor raises 

 other considerations than those specially dealt with in this chapter, 

 but it is observed in passing that both genera respond in like fashion 

 to the differentiating influences that are often intensified in oceanic 

 islands. 



Note. — With reference to trans-oceanic dispersal in high southern 

 latitudes reference should be made to Note 37 of the Appendix, 

 where the distribution of Uncinia, a genus allied to Carecc, is dealt 

 with. 



