30 



THE VOYAGE OF H.M.S. CHALLENGER. 



the Canaries are all widely dispersed species, and the only one recorded from Rodriguez is 

 common in Tropical Asia and Australia. 



Approximate Number of Species of Carex in various Islands and 



Continental Areas. 



Arctic Regions 



Greenland . 



Europe 



Spitzbergen 



Iceland 



Sweden 



Norway 



Government of Vologda 



Britain 



France 



Germany and Switzerland 



Italy . 



Maritime Alps 



Pyrenees 



Spain . 



Portugal 



Bermudas . 



Azores 



Canaries 



St Helena . 



Tristan da Cunha 



Algeria 



Marocco (Ball) 



Egypt 



Oases . 



37 



40 



163 



10 



32 



99 



102 



34 



60 



93 



109 



96 



45 



75 



66 



20 



1 



12 



6 



o 



2 



30 



10 



2 



1 



Abyssinia . 



Kilimanjaro 



Cameroons 



South Africa 



Levant (Boissier) 



Palestine . 



Arabia 



Persia 



Tauro-Caucasus 



India 



Ceylon 



Amur 



Peking 



Hong-Kong 



Japan 



Malayan Archipelago 



Rodriguez . 



Mauritius . 



Madagascar 



Australia . 



Queensland 



Australia, West 



Tasmania . 



New Zealand 



Auckland Islands 



o 



3 



5 



12 



93 



14 



2 



12 



34 



100 



16 



24 



10 



9 



95 



23 



1 



5 



6 



29 



10 



5 



13 



40 



4 



ether with the fact that the insular 



The general dispersion of the genus Carex, tog( 

 species are mostly endemic, seem to indicate that it is a very old type. With the excep- 

 tion of the south-eastern groups of Polynesia (the Society and the Marquesas, for example), 

 the Galapagos, and the small islands in the southern part of the Indian Ocean, Carices 

 cover, more or less plentifully, nearly all frigid, temperate, and subtropical areas. The 

 paucity of species in the mountains of the West Indies aud in the Andes is remarkable ; but 

 what is more singular, several of the common species of the northern hemisphere are found 

 in New Zealand, and nowhere else, so far as we know, in the southern hemisphere. It is 

 noteworthy, too, that some of the insular species are among the larger ones of the genus. 

 Carex prcealta of St Helena grows six feet high, and is stout in proportion ; and Carex 

 trifida of New Zealand and the Falklands is a very robust species. The almost equally 

 large genus Cyperus is generally diffused in hot countries, and a few species extend into 



