FROM THE STANDPOINT OF AN IDEALIST. 463 
C.— Composite alone. 
Tribes. Genera, Species. 
Noc d Nor ey, No. Hs 
Bloadn E E 1 309 49 4858 518 
New Wod e ; 843 47 4463 47:5 
Bock Wor ....,... 12 78 1] 63 (Uf 
13 | 730 | 100 | 9884 | 100 
D.— Genera. 
No. ur. 
Old World... 95. 1472 46:7 
Now World: 3 | 800 254 
Both Worlds; 1,1 | 878 91:9 | 
3150 100 
Explanatory remarks.—With reference to sub-table A it may be remarked 
that the materials are complete for the larger groups, the primaries, the cohorts, 
and the families. For the tribes the matter has been sampled. In this 
respect the data for 23 families and sub-families were tabulated in a paper by 
the writer published in the ‘Transactions’ of the Victoria Institute for 1907. 
Those for 19 others have since been added, making a total of 42; and on these 
the results for the tribes, genera, and species are based. The volumes of 
the * Pflanzenreich’ series have here been used, except with the Com- 
posite, where Bentham has been followed. In the early paper only the 
tribes designated as such were utilised. In this sub-table all intermediate 
groupings between the genera and the family are employed under this head 
where it is practicable. 
In sub-table B all the materials in sub-table A are used with the 
exception of those for the Composite, which are treated separately in 
sub-table C. 
In sub-table D are given the results of an analysis made by the writer of 
the list of chief genera (about 3150 for the Angiosperms) that is given by 
Dr. Willis in his ‘Flowering Plants and Ferns’ for 1908. The increase in 
the percentage of genera common to the eastern and western hemispheres 
is due to the fact that the list is only concerned with “chief” genera; 
and it is obvious that the number of genera with limited distribution 
that are here excluded is very large, and would have gone far to pull 
down the percentage of both-world genera. Probably in a complete list 
of genera the percentage found in both worlds would be nearer that for 
the Composite, where the proportion is 11 per cent.; and there is there- 
fore much to support the estimate adopted in this paper of “less than 
20 per cent." 
NE STREET 
MT AR 
