Feb, 1895.] BOTANICAL SOCIETY OF EDINBURGH. 



161 



The following table shows the number of species in each 

 of the three divisions of the vegetable kingdom : — 



There are 8 species of Cryptogams ; but with the 

 exception of the two Algne, Chlorococcus ? and C]u€tomo7'pha 

 sp., these are rare on the island. The 25 native species 

 belong to 18 natural orders, or about Ij species to an 

 order on an average. The number of species in the 

 larger orders are Lichenes and Algfe 3 each, and Portu- 

 laceffi, Couvolvulacea?, and Graminea3 2 each. Of the 17 

 native species of Phanerogams, the following 6 species 

 are not recorded from Mauritius by Baker, viz. : — Sidct 

 diffusa, Portidaca psammotroijha, Tpomcea glalcrrima, Phyl- 

 lanthus mauritianus, Fimhristylis ohtusifolia , Lciiturus rcjyens. 



The flora of He Vakois is remarkable in containing no 

 naturalised plants. On the main island of Mauritius 

 the naturalised species of Phanerogams amount to about 

 a quarter of the total number. A common species of 

 British sow-thistle, Sonchvs oleraceus, grows on the sea- 

 shore in He Vakois, where the mean annual temperature 

 in the shade is about 75° Fahr. It is undoubtedly native 

 in this locality. 



SiDA DIFFUSA, H. B. K. — Baker, Flor. Maur. Seych., p. 1 9. 

 5th September 1889. See remarks on this species, under 

 He de la Passe, in this report. 



SuRiANA MARITIMA, Linn. — Baker, Plor. Maur. Seych., 

 p. 42. Very common, oth September 1889. 



Pemphis acidula, Forst. — Baker, Flor. Maur. Seych., 

 p. 101. 5th September 1889. Common at the west end 

 of the island, and rare at the north side. 



