198 



C. SKOTTSBERG 



Rubus geoides Sm 



Salicornia fruticosa Kunth 



Santalum fernandezianum F. Phil 



Scirpus cernuus Vahl 



— nodosus Rottb 



SELKIRKIA Berteroi (CoUa) Hemsl 



Solanum fernandezianum Phil 



— masafueranum Bitter et Skottsb 



— robinsonianum Bitter 



Sophora fernandeziana (Phil.) Skottsb 



— masafuerana (Phil.) Skottsb 



Spergularia confertiflora Steud 



— masafuerana Skottsb 



Stipa (Nassella) laevissima (Phil.) Speg ; 



— neesiana Trin. et Rupr 



SYMPHYOCHAETA macrocephala (Dene) Skottsb. 



Tetragonia expansa Murr 



Trisetum chromostachyum Desv 



Ugni Selkirkii (Hook, et Arn.) Berg 



Uncinia brevicaulis Thouars 



— costata Kuekenth 



— Douglasii Boott 



— phleoides Pers 



— tenuis Poepp 



Urtica fernandeziana (Rich.) Ross 



— Masafuerae Phil 



Wahlenbergia Berteroi Hook, et Arn ' . 



— fernandeziana (A. DC. p. p.) Skottsb 



— Grahamae Hemsl 



— Larrainii (Colla) Skottsb 



— Masafuerae (Phil.) Skottsb 



YUNQUEA Tensii Skottsb 



Clara, and 74 on Masafuera; 68 = 46.3 % (68.7 % of 99) are restricted to Masa- 

 tierra, i = 0.7 % to Santa Clara, and 47 = 32 % (63.5 % of 74) to Masafuera, 

 4 - 2.7 % are common to Masatierra and Santa Clara with the exclusion of Masa- 

 fuera, 4 = 2.7% found in all three islands and 23= 15.6% on Masatierra and 

 Masafuera excluding those also occurring on Santa Clara. Thus only 27 species 

 = 18.4% are reported from both Masatierra and Masafuera, a surprisingly small 



