298 PATAGONIAN EXPEDITIONS I BOTANY. 



Chair 43 Hermite 56 



Poor 1 2 Staaten Is 1 16 



Horn , . . . . 44 Falkland Is. (Port Stanley, after 



Melville 44 Birger) 112 



Britton 4 



Total, 1357 species. 



Wildeman observes that no species is spread over the whole field and 

 some of the islands contain endemic forms ; but some which are now 

 apparently localized will probably prove to be of more extensive 

 distribution. 



The following are the most widespread of these species : 



Drymus winteri Forst, found in 14 of the 26 regions explored. 



Cardamine antiscorbutica Banks & Sol., found in 1 3 of the 26 regions explored. 



Nothofagus betuloides (Mirb.) Bl., found in 13 of the 26 regions explored. 



Perezia magellanica, found in 1 3 of the 26 regions explored. 



Chiliotrichum diffusum (Furst.) Dus., found in 12 of the 26 regions explored and in Falklands. 



Poa flabtllata (Lam.) Hook., found in 12 of the 26 regions explored. 



Senecio acanthifolius Homb. & Jacq., found in 12 of the 26 regions explored. 



Ac&na pumila Vahl., found in n of the 26 regions explored. 



Apium graveolens L., found in n of the 26 regions explored. 



Crassula moschata Forst., found in 1 1 of the 26 regions explored. 



Gunnera magellanica Lam., found in 1 1 of the 26 regions explored and in Falklands. 



Oreobolus obtusangulus Gaud., found in II of the 26 regions explored and in Falklands. 



Senecio smithii DC., found in 1 1 of the 26 regions explored. 



Astelia pumila R. Br.; Callixene marginata ; Colobantus subulatus ; Empetrum rubrum ; Myrteola 

 nummularia found in 10 of the 26 regions explored and in Falklands. 



Berberis ilicifolia ; Cotula scariosa, found in 10 of the 26 regions explored (not in Falklands). 



Escattonia serrata ; Lebetanthus americanus, found in 10 of the 26 regions explored (not in 

 Falklands). 



Nanodea muscosa, Rostkovia grandiflora, found in 10 of the 26 regions explored (not in Falk- 

 lands). 



He also remarks that all these species occur in the American continent, 

 mostly with extensive range. One, Apium graveolens L., is also found 

 in other continents. Some other species are European, but of restricted 

 American distribution. Most of the Fuegian forms occur on the main- 

 land ; and the islands doubtless contain many other continental forms, 

 not yet reported from them. Thus probably the flora which now covers 

 what are the vestiges of an ancient continent are the descendants of a 

 vegetation of unique origin. (It is a question worthy of attention whether 

 the similarity of the Falkland Is. vegetation with that of the continent is 

 sufficient to justify the theory of an ancient land-connection. G. M.) 



