DERIVATION OF THE FLORA AND FAUNA 219 



The systematical position of the endemites and the geographical distribution 

 of the genera and species also found elsewhere. 



Hymenophyllaceae. 



Trichomanes L. coll. The island species belong to Vandenhoschia Copel., a pan- 

 trop. and circum-austr. genus of about 25 sp., extending north to N, Amer., Engl, 

 and Japan. 



philippianum Sturm. "One of the most distinct species of Ti'ichomanes . . . 

 its cellular structure quite unique" (CllRlSTENSEN ^^.3). — Also in S. Chile? (see 

 I.e. 2). 



Ingae C. Chr. Belongs to the neotrop. pyxidiferum group. 



exsectum Kze. S. Chile, south to Chiloe. Near the neotrop. T. tener'utn Kze. 

 Serpyllopsis v. d. Bosch. A monotypical genus without near relatives (Copeland 



^9' 37). 



caespiiosa (Gaud.) C. Chr. (var. fernandeziana C. Chr. et Skottsb., slightly 

 different from the forms described from the mainland). Falkl. and Fueg. to S. Chile. 

 Hymenoglossum Presl. Monotypical and without near affinity to any known genus 

 (Copeland I.e.). 



cruentum (Cav.) Presl. S. Chile, Valdivia to 49° s. lat. 

 Hymenophyllum Sm. coll. 



a. Mecodium Presl. About 100, pantrop. and austral, with several sp. in N. 

 Zeal.; north to Sakhalin. 



cuneaUwt Kze. S. Chile, Valdiv.-W. Patag.; Marquesas Is., Rapa. Near 

 H. polyanthes Sw., a variable pantrop. sp. 



caudiculatum Mart. Peru, S. Braz., S. Chile, Valdiv.-49° s. lat. 



fuciforme Sw. S. Chile to W. Patag. A very distinct sp., referred to Meco- 

 dium with considerable doubt (CoPELAND ^<5. 95). 



b. HyfnenophyllMH s. str. About 25, austr.-circump. with outlying stations in 

 W. Eur. and Japan; H. peltatum (Poir.) Desv. widely scattered in slightly different 

 forms. 



pectinatum Cav. S. Chile, Valdiv.-Fueg. An aberrant species, CoPELAND 6g. 34. 



falklandicmn Bak. W. Patag., P'ueg., Falkl., S.Georgia. Related to /'^//^?///w 

 which, \{ falklandicum really belongs to Mecodium, where CoPELAND placed it 

 -<5^. 94, also must be brought here; peltatum is known from extratropical regions 

 of both hemispheres and also reported from Chile (perhaps = var. Mejiziesii '(^x^^X) 

 C. Chr. 61. 4), by Ciiristensen also quoted for Juan Fernandez — he must have 

 forgotten that in 62. 1 1 all material from there was referred to falklandicum. 



rugosum C. Chr. et Skottsb. Related to //. tunbridgerise (L.) Sm., W. Ind., 

 Venez., Chile, Atl. islands, Mediterr., S. Afr., Austral., Tasm., N. Zeal. 



c. Sphaerocioyiium Copel. A pantrop. and austral genus of about 50 sp., richest 

 developed in trop. Amer. 



ferrugineum Colla. S. Chile, Valdiv.-Fueg. Related to the pantropical H. ci- 

 liatum Sw. and belonging to a small austral-tricentric group of closely allied spe- 

 cies, H. Frankliiiiae Col. (N. Zeal, probably = ferrugineum, CllRlSTENSEN 61. 5), 



