THE BRYOPHYTA OF ICELAND 



655 



Table IV. The Frequency of the Species in the different Districts 



of Iceland (continued). 



Of the 93 Hepaticse, 20 Sphagna and 326 Musci veri found in 

 Iceland, 7 Hepatica?, 3 Sphagna and 4 Musci veri (besides 3 varieties) 

 have been found only on warm soil. The other 425 species (87 

 Hepaticae, 17 Sphagna and 322 Musci veri) enumerated in the above 

 table can be arranged according to frequency in the following 

 groups (Table V): 



a. Dominant or very common species, the frequency of which 

 is expressed by the figure 4 in all parts of Iceland or by 3 

 in only a few parts. 



b. Frequent species, the frequency of which is expressed by the 

 figure 3 in the whole, or at any rate in the greater part, of 

 Iceland. 



c. Species of which the frequency is expressed by the figures 1 

 a 2, or which have a higher degree of frequency only in a 

 single district of Iceland. 



