STUDIES IN THE VEGETATION OF THE PHILIPPINES, I. 705 

 Table III — Continued. 



While all the trees mentioned above may in exceptional cases reach 

 a diameter limit of 30 centimeters, as a matter of fact most of them will 

 reach when mature not over 40 centimeters in diameter and very few of 

 them have the power to reach the diameter and height of some of the 

 dipterocarps. 



If bulk were taken into consideration the proportion of the dipterocarps 

 would be much greater. This will be shown in another connection. 



The 334 remaining trees that can not reach, when mature, 30 centi- 

 metere in diameter will not average over 15 centimeters in diameter. 

 Strange to say, while 40 species are represented in these, the vast 

 majority of them are distributed among species of the Euphorbiaceae and 

 Melastomataccae. Thus Memecylon edule Eoxb. {MeIastomatacea&) is 

 represented by 94 trees, and Aporosa sphaeridophora Merr. by 81, Cyclos- 

 frmon microphyUuni Merr. by 30, Aporosa symplocosifolia Merr. by 22, 

 and Baccaiirea tetrandm Baill. by 10. The last four named belong to 

 the Euphorbiaceae. 



It might be argued that plots adjoining the one given above might 

 greatly increase the number of species. While this is true to a certain 

 .extent, yet the possibilities are not great when it is known that on the 

 Lamao Forest Reserve comprising 4,426 hectares and ranging in altitude 

 from sea level to 1,406 meters there have been listed so far 548 tree 

 species. This covers the trees of all habitats from those where introduced 

 tree species are found to the mossy forests on top of the highest peaks. 

 It is to be expected that the variety of habitats thus represented would 

 bring about a variety in tree species peculiar to those habitats. Thus 

 beach and mangrove habitats show distinct sets, river bottoms others, the 

 mossy forest and various types of dipterocarp forest still others. It 

 should be noted here that all eight of the dipterocarps found on the 

 Lamao Forest Eeserve of 4,426 hectares are also found on the plot given 

 above comprising less than one hectare. At the time I wrote the "Vegeta- 

 tion of the Lamao Forest Eeserve" the significance of the above did not 



