122 CARL SKOTTSBERG, A BOTANICAL SURVEY OF THE FALKLAND ISLANDS. 



Sol. Accena adscendens Cerastium arvcnse Troximum pumUum. , 



Apium australc, Oxalis enneapkylla I 



Bryophytes: Grimmia conferta, Tortula litorea Card. n. sp. 



In Port Howard, we gathered a number of cryptogams among the rocks of the 

 shore: Dichodontium persquarrosum, Philonotis litorea Card. n. sp., Polytrichum piU- 

 ferum; Androcryphia confluens, Aneura tenax; Cladonia coccifera, gracilis, verticillata, 

 Cetraria aculeata. 



Thongh not in any of these lists, Orthotrichum crassifoUum, here as in South 

 Georgia, seems to be widely spread, for we collected it in Fox Bay (W. F.), Low 

 Bay and Rabbit Co ve (E. F.). 



Rock surface associations. 



The petrophilous lichens were studied especially in Port Louis. Here the 

 rocks of the shore are covered by a multicoloured lichen-vegetation. On härd, quart- 

 zitic sandstone: Aspicilia lirellina, orbiculata, Buellia discreta, falklandica, Gyrophora 

 jjolyphylla, Hceinatomma coccineum, ventosum, Lecanora frustulosa, Lecidea agellata, 

 Ochrolechia parella, Parynelia Mougeotii, Periusaria alterimosa, solitaria, Placodiutn 

 ambitiosutn, lucens, miniatum, Ramali7ia scopulorum, Ehizocarpon geminatum, Verru- 

 caria glaucoplacoides, Xanthoria lychnea. 



On loose, fossiUferous sandstone : 



Bacidia tuberctdata, Lecidea capistrata, Parmelia saxatilis, Stictina gilva. 



Near the water, Placodium puts its stamp upon the vegetation so that one 

 could speak of a P. -association or zone. Higher up Ra^nalina sometimes, but not 

 always, occurs in such masses as to form a distinct R.-zone. 



25. Beach of pebbles, mingled with gravel and sand, Hill Co ve, W. F. 



Spårs. Acjropyrmn magellcmicum Pua antarctica Senecio Utoralis 



Cortaderia 'pilosa Sol. Arahis macloviana Sisyrinchium fdifoUum 



Festuca magellanica Hypochoeris arenarm Taraxacum magellanicum. 



Oxalis enneapkylla 



Placodium muroruyn in generally seen on the pebbles. 



26. Sandy beach, very rich in small fragments of mussel-shells. Spring Point, 

 W. F. Only a very limited area, but with an interesting vegetation. Dense, low 

 carpet of Ranunculus-C7'assula-Si'å?,oci3i,t\o\\. 



Greg.-soc. Bannnculus acaulis Cop. Colobanthus crassifolius 



Greg. Crassula moschata Spårs. Plantago harhata 



Cop. Juncus scJtcuchzerioides (Sol. Baccharis magellanica, dwarf specim., rare). 



II 



