DERIVATION OF THE FLORA AND FAUNA 24I 



Lopholejeunea Spruce (74). Trop. and austral; trop. Amer. (13), trop. Afr. (17), 

 trop. As.-Oceania (38), Austral.-N. Zeal. (6). 

 spinosa St. — Mt, Mf. 



Brachiolejeioiea Spruce (65). Trop. Amer. (26), Chile (i), Afr. (10), trop. As.-Oce- 

 ania (22), Austral.-N. Zeal. (6). 



spruceaita (Massal.) St. S. Chile-Magell. — Mf. 

 Harpalejeunea Spruce (57). Trop. Amer. (36), Chile (2), Afr. (2), As.-Oceania (8), 

 Austral.-N. Zeal. (9). 



oxyota (Mont.) St. Centr. (Coquimbo) and S. Chile to W. Patag, Tristan da C. — Mf. 



setifera (St.) Herz. Magell. — Mf. 

 Strepsilejeunea Spruce (47). Trop. Amer., south to Chile (19), Afr. (6), As. (7), 

 Austral.-N. Zeal. (7), subantarct. (8). 



acuminata (Lehm. et Lindenb.) St. S. Chile. — Mt. 



squarrosula Herz. — Mf. 



macroloba Herz. — Mf. 

 Siphonolejeunea Herz. (i). 



nudicalymia Herz. Centr. Chile (Coquimbo, iji. 65). — Mt, Mf. 

 Lejeiinea Lib. (190). Pantrop., scarce toward the south. 



reticulata Herz. Related to Chilean sp. — Mt, Mf. 

 Apha7iolejeunea Evans (13). Trop.-subtrop. 



asperrima St. S. Chile. — Mt. 



diaphana Herz. Centr. Chile (Coquimbo, S. Arnell ms.). — Mt. 

 Cololejeunea Spruce (about 80). Mainly trop. 



Skottsbergii Herz. Nearly related to a species from N. Zealand. — Mt, Mf. 

 Colura Dumort. (30). Trop. to subantarct.; Amer. (8), Magell. (2), Eur. (i), Afr. 

 (2), Indomal. (16). 



bulbosa Herz. W. Patag. (j?7. 66).— Mf. 



The 124 Hepaticae, of which 25 (20.2%) are endemic, belong to 47 genera 

 (2.6:1); 27 are thallose, 97 foliose. None have been reported from Santa Clara. 



Of the 27 thallose species 21 have been recorded from Masatierra and 23 

 from Masafuera; 4(15 %) are known from Masatierra only, 7 (25 %) restricted to 

 Masafuera, 16 common to the two islands. Of the 5 endemics 2 have been found 

 on Masatierra only, 3 on both islands. Endemism is stronger on Masatierra (25 %) 

 than on Masafuera (13 %). 



Of the 97 foliose species 59 occur on Masatierra and 6^] on Masafuera; 30 

 (30.9 %) are restricted to Masatierra, 38 (39.2 %) to Masafuera, 29 (29.9 %) are found 

 on both islands. Endemic species 20 (21.6%), of these 9 only on Masatierra, 5 

 only on Masafuera and 6 found on both islands. 



Of the 59 species recorded for Masatierra i 5 are endemic in the islands (25.4 %); 

 the corresponding figures for Masafuera are 67, 1 1 and 16.4 %. After the discovery 

 of Siphonolejeunea on the mainland of Chile there is no endemic genus in Juan 

 Fernandez. 



Of the total number of species, 124, 80 occur on Masatierra and 90 on Masa- 



i6 - 557857 The Nat. Hist, of Juan Fernandez and Easter Isl. Vol. I 



