15° BOTANICAL GAZETTE [SEPTEMBER 
Schimper, 96 per cent. of the species are apetalous and chori- 
petalous, and but 4 per cent. gamopetalous, while according to 
Lesquereux 92 per cent. are apetalous and choripetalous, and 8 
per cent. gamopetalous. Again, we find that, according to 
50 Sp 
Fig. 1. Diagrammatic comparison of the groups of Cretaceous dicotyledons : 
according to Schimper; 2. according to Lesquereux. The widths of the cee 
indicate relative numbers of species. 
Schimper, 80 per cent. of the species have superior ovaries and 
20 per cent. inferior ovaries, and these are exactly the propor- 
tions in Lesquereux’s list. It is worthy of notice, also, that the 
two lists agree almost exactly in the sub-orders represented, and 
in the relative number of species in each. Thus in the Thalami- 
flor in both lists the Ranales and Malvales are more numerously 
represented than are the Caryophyllales ; in the Calyciflore, the 
parallelism is still more marked, the lowest numbers occurring in 
both lists in Myrtales and Umbellales, intermediate numbers in 
Rosales, and the highest in Celastrales and Sapindales. 
In one particular there is a marked difference between the two 
lists. Schimper’s contains 64 per cent. of apetalous plants, with 
