IP s t e I 5 i a 129 



amination will reveal the fact that the Pterid- 

 ophyta are represented by 18 species, 12 of which 

 come within the family Polypodiacea. The 

 genera Polystichum, Lomaria, Pteris, and Dry- 

 opteris constitute the principal part of the Pter- 

 idophytic vegetation. 



The Gymnospermcu are represented by 2 

 families of the Coiiijercc and present 8 genera 

 and 10 species. The great bulk of the Van- 

 couver Island vegetation falls within this division 

 and 4 or 5 species preponderate heavily: these 

 are Picea sitchensis Thuja plicata, Tsuga heter- 

 ophylla, Abies amabilis, and Pseudotsuga taxi- 

 folia. 



Two hundred and twenty-two species belong 

 to the Angiospenncc of which 79 are Mono- 

 cotyledons and 143 Dicotyledons,. The former 

 class presents 42 genera in 10 families: the latter 

 119 genera in 42 families. The characteristic 

 northern preponderance of grasses, sedges, and 

 rushes is shown by the fact that the family 

 Graminece yields 24 species. The CyperacccB 

 come second with 22 species and the Juncacece 

 fifth with 9 species. The latter being exceeded 



