198 



C. SKOTTSBERG 



Riibus geoides Sm j 



Salicornia fruticosa l\unth j 



i Santalum fernandezianum F. Phil j 



Scirpus cernuus \'ahl 



j — nodosus Rottb ! 



I SELKIRKIA Berteroi (CoUa) Hemsl 



I Solanuni fernandezianum Phil 



! — masafueranum Bitter et Skottsb 



— robinsonianum Hitter 



; Sophora fernandeziana (Phil.) Skottsb 



I — masafuerana (Phil.) Skottsb 



I Spergularia confertiflora Steud 



I — masafuerana Skottsb 



i Stipa (Xassella) laevissima (Phil.) Speg 



— neesiana Trin. et Rupr 



SYMPHYOGHAETA macrocephala (Dene) Skottsb 



i 

 Tetragonia expansa Murr 



: Trisetum chromostachyum Desv 



; Ugni Selkirkii (Hook, et Arn.) Berg 



j Uncinia brevicaulis Thouars 



i — costata Kuekenth 



— Douglasii Boott 



— phleoides Pers 



— tenuis Poepp 



Urtica fernandeziana (Rich.) Ross 



j — Masafuerae Phil 



j Wahlenbergia Berteroi Hook, et Arn 



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



j — Grahamae Hemsl 



— Larrainii (Colla) Skottsb 



i — Masafuerae (Phil.) Skottsb 



I YUNQUEA Tensii Skottsl) 



Clara, and 74 on ^Ma.safuera; 6<S - 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 Ma.satierra 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 °o are reported from both Masatierra and Masafuera, a surprisingly small 



