KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 50. N:0 3. 113 



Pernettya piimila Senecio Utoralis Leuceria suaveolens 



Poa antarctica Sisyrinchium filifolium Nassauvia Gaudicliaudii 



Spars.-sol. Oxulis enneapliylla Sol. Hicracmm antardkum Poa flahellata (Mouiit Low, rare). 



Covering the soil a dense mosaic of: 



Cop. Bleclinum penna marina Sol. Carex vallis pulcJircc (Mount Lagenopltora uiidicaulis 

 Spårs. -cop. Azorclla lycopodioides Low, rare) Viola tridentata. 



Sol. -cop. Eiiargea marginata 



Creeping on the ground: Myrteola nummularia. 

 Bryophytes: Cam/pylopus spp., Dicraman spp. 



Lic liens: Cladonia aggregata, Sphcerophorns coinpressus, coralloides, tenerus, 

 Sticia Urvillei, Stictina crocata. 

 In the crevices: 



Bolax gummifera Hymenophyllum falJclandicum 



ColobantJms subulatus Serpyllopsis ccespitosa. 



On such places one finds the largest cushions of Bolax; subglobose specimens, 

 measuring one metre across are not rare. I have published a typical photograph 

 in Karsten & Schenk's Vegetationsbilder {13). Anatomically, Bolax is most remark- 

 able for its water-storing tissue in the leaf-sheaths {16). 



The two hymenophyllaceous ferns are often mixed, sometimes forming nearly 

 pure mats, bnt generally accompanied by mosses etc. The following cryptogams 

 were found to be characteristic of such situations : 



Bryophytes: Campylopus, Dicranum spp., Aneura breviramosa, Frullania 

 Boveana, Jamesoniella colorata, Lepidozia pallida. 



Lichens: Cladonia deformis, pyxidata, Sphceroplioriis compressus, Sticta Urvillei. 



Everywhere where the fractures are old enough, the quartzite is covered by 

 crustaceous lichens, with the addition of a fevv fruticulose and foliaceous ones and 

 some mosses: Andrema grimtnioides, pseudosuhulata. 



Lichens: Gyropliora Dillenii, HcematoTnma coccineum, Lecidea elata, eloeochroma, 

 interrupta, tenebrosula ; Neuropogon melaxanthum, trachycarpum, Ochrolechia parella, 

 Parmelia enteromorpha, saxatilis. Ramalina linearis, Bhizocarpum geographicum, Sticta 

 crocata. 



On Weddell Island we coUected Andrecea petrophila and rupestris, Blindia 

 pseudolygodipoda and Ceratodon purpureus on the quartzite; above the bank of Warrah 

 River, north part of W. F. : Andrecea mutabilis, Campylopus iritroflexus, Isopterygium 

 elegans, Oedipodium Griffithsianum and Webera nntans. 



On the N. slope of Byron Heights in West Falklands, for a distance of some 

 km. E. of Sharp Peak, Blechnum magellanicum is accompanied by B. chilense, a species 

 common in the Chilean rain-forest, but not growing in Fuegia. The fronds are con- 



K. Sv. Vet. Akad. Handl. Band. 50. N:o 3. 15 



