THE BRYOPHYTA OF ICELAND 



637 



by the severe climale and the snow, which lemains over ex- 



tensive tracts till late in the summer, and saturates the soil 



with ice-cold snow-water. 



In the following table the first column consists of the species 



which have been found in the Lowland region, the second column 



the species which have been found in the Mountain region, and 



the third the species which have been i'ound in the Snow region. 



A cross ( + ) indicates that the species has its main distribution in 



the region in queslion; a dash ( — ) indicates that the species in 



question decreases in frequency and extends to a more or less high 



level (or low level) in the region in question, and a dot (•) indicates, 



that the species has been found only in a few piaces close to the 



boundary of the region to which it belongs, or that it has, on the 



whole, been found so scantily that no opinion can be formed with 



regard to its distribution within the different allitudinal regions. 



Table III. The Distribution of the Bryophyta in the different 



Altitudinal Regions. 



SI S 



o 



O 



O 



o 

 o 



s 



o 

 o- 



O) 



>■ 



o 



< 



Hepaticæ. 



Sauterla alpina 



Reboulia hemisphærica 



Fimbriaria pilosa 



Fegatella conica 



Preissia commutata 



Marchantia polymorpha .... 



Aneura multifida 



— latifrons 



Pellia Neesiana 



Metzgeria furcata 



Blasia pusilla 



Fossombronia Dumortleri . . . 

 Gjninomitriiim coralloides. . 



— concinnatum 



— varians 



— revolutura . . 

 Marsupella Funckii 



— eniarginata 



— aquatica 



Alicularia scalaris 



— geoscypha 



Eucalyx subellipticus .... 



Haplozia crenulata 



sphærocarpa . . . 



— cordifolia 



— riparia 



— atrovirens 



— pumila 



Jamesoniella autumnalis . 

 Sphenolobus minutus.... 



— politus 



Lophozia quinquedentata 



— lycopodioides . 



— Fhtrckei 



— quadriloba 



— Kunzeana 



— barbata 



— ventricosa 



— Wenzelii 



— alpestris 



+ 



4- 



4- 

 4- 



