598 



A. HESSELBO 



Srelania caesia 

 Anomobryum filiforme 

 *Plagiobryum Zierii 

 Bryum (jeneum 



pallescens 

 capillare 



*Moiuni orthorrhynchum 

 serratum 

 stellare 



*Orlhothccium chryscnm 



intricatum 

 Eurhynchium strigosum 



Swartzii 



*Plagiothccium pulchellum 



depressum 

 Roeseanum 



*Amblystegium Sprucci 

 Hypnum hamulosum 



Among the species met with here, which however cannot be 

 reckoned to the chomophytes proper, the following are the most 

 frequent: Bartramia ityphylla, Pohlia cruda, Brynm inclinatum, B. 

 ventricosum , Oncophorus virens, 0. Wahlenbergii , Didymodon ru- 

 bellus, Distichium montanum, Schistidium apocarpum, S. gracile, Di- 

 trichum flexicaule, Philonotis tomentella, Marchantia polymorpha, 

 Lophozia spp., Scapania curta, S. snbalpina and Blepharostoma tricho- 

 phylhim. 



Stony and Gravelly Slopes. The Bryophyte vegetation 

 is, as a rule, rather poor in species, and not very characteristic. 

 Rhacomitrium heaths are common where the slope is not too steep, 

 but stony and gravelly slopes are often almost bare of vegetation, 

 only here and there occur some cushions of Dicranoweisia crispula 

 and species of Rhacomitrium. 



A Stony Slope near Grunnavik in NW. Iceland consisted 

 of large blocks at the foot, and in the upper and steeper part of 

 smaller stones. Vegetation was absent at the top, but increased in 

 abundance lower down as the ground gradually become more level, 

 and the conditions thereby became more stable. Scattered among 



^ CJ 



the stones grew plants of the rocky flat, for instance Salix herba- 

 cea, Papauer radicatum. Oxyria digyna, Sibbaldia procumbens and in 

 the shelter afforded by larger stones Athyrium alpestre, Alchemilla 

 alpina, etc. Upon the stones grew Rhacomitrium hypnoides, R. fas- 

 ciculare and Dicranoweisia crispula and on the ground between the 

 stones Brachythecinm reflexum, Hypnum uncinatum, Lescuraa pa- 

 tens, L. fitamentosa, Hylocomium squarrosum, Polijtnchum alpinum, 

 Dicranum fuscescens, Lophozia uentricosa, L. lycopodioides and Anthelia 

 julacea. 



Stony Slope near Berufjordur. On the sleep somewhat 

 damp slope there grew Rhacomitrium fasciculare, Schistidium gracite, 

 Dicranoweisia crispula, Lescura'a decipiens, Heterocladium s(marrosu- 

 lum and Timmia austriaca. 



