ART. 22 TERTIARY FOSSIL PLANTS FROM ARGENTINA BERRY 15 



judge from figures, this is identical with what Duscn considered to 

 represent a /6'CTr;pi<5-like sedge from the Tertiary of Seymour Island, 

 Antarctica. 



Obviously, little reliance can be placed upon this similarity, since 

 both occurrences represent a type which might have been present in 

 this region at any time from the Upper Cretaceous to the present and 

 which could scarcely be expected to show differential characters. 



Occurrence. — Southeast side of Rio Nirihuao near Casa Piedra, 12 

 miles south of Lago Nahuel Huapi, Territory of Rio Negro. 



Cat. No. 37860 U.S.N.M. 



Class DICOTYLEDONAE 

 Order FAGALES 

 Family FAGACEAE 



Genus FAGUS Linnaeus (?) 



FAGUS SUBFERRUGINEA Dusen 



Fagus siibferruginea Dusen, Svenske Exped. Magellanslanderna, vol. 1, No. 4, 

 p. 94, pi. S, figs. 1-8, 1899. 



This species was described by Dusen ftom near Punta Arenas and 

 Barancas de Carmen Sylva in the Magellan Strait region. It is rep- 

 resented by a number of specimens in the present collection. I can 

 see no valid reason for referring it to Fagus instead of Nothofagus. 

 It is larger than the majority of leaves of Nothofagus and does 

 resemble the leaves of the European beach; but occurring as it does 

 in a profuse occurrence of Nothofagus., it is most unlikely to repre- 

 sent the northern genus. 



Occurrence. — Four kilometers west southwest of Bernal, 12 miles 

 southeast of Barriloche, Lago Nahuel Huapi, Territory of Rio Negro. 



Cat. No. 37861, U.S.N.M. 



Genus NOTHOFAGUS Blume 



NOTHOFAGUS SIMPLICIDENS Dusen 



Plate 2, Figures 7-9 



'Nothofagus simplioidens Dus£n, Svenske Exped. till Magellanslanderna, vol. 1, 

 No. 4, p. 100, pi. 9, figs. 20-25, 1899. 



This species was named — it can hardly be said to have been de- 

 scribed — by Dusen in 1899. His material was abundant and came 

 from the following localities in the vicinity of the Strait of Ma- 

 gellan : Barancas de Carmen Sylva, Rio Beta, Rio Condor, Bagnales, 

 and near Punta Arenas. 



