IX, A. 6 



Brown and Mathews: Dipterocarp Forests 



439 



Table VIII. — Stand table for 1 hectare {average of 6 hectares), northern 

 Laguna forest, showing number and volume of each species — Contd. 



Species. 



Skorea squamata (mayapis). _-. 



Skorea teysmanniana (tiaons lauan) 



Shorea polysperma (tanguile) 



Dipteroearjms sp. (apitong) 



Pentaeme eontorta (white lauan) 



Dipterocarpus sp. (panao) 



Hopea pierrei (dalindingan isak) 



Total dipterocarps 



Total, all other species 



Grand total . 



Diameter class in centimeters. 



60. 



70. 



Trees. 



3.16 



2.98 

 0.82 



Vol- Trees, ^ol- 

 ume. ume. 



10.70 

 9.88 

 2.75 



0.33 



1.13 



7.29 

 1.49 



8.78 



0.65 

 0.71 

 1.15 

 0.33 



0.16 



4.09 

 6.22 

 5.85 

 1.75 



0.87 



24.46 

 4.73 



3.00 

 0.66 



29.19 



3.66 



18.78 

 3.54 



22.32 



80. 



Trees. 



0.48 

 0.70 

 0.81 



Vol- 

 ume. 



3.94 

 7.56 

 5.64 



0. 16 1. 66 



2. 15 18. 80 



2.15 



18.80 



90. 



Trees. 



0.16 

 0.16 



0.32 



0.32 



Vol- 

 ume. 



1.55 

 3.11 



4.66 



4.66 



Species. 



Shorea sgtuimata (mayapis) 



Shorea teysmanniana (tiaong lauan) . 



Shorea polysperma (tanguile) 



Dipterocarptis sp. (apitong) 



Pentaeme eontorta (white lauan) 



Dipterocarpus sp. (panao) 



Hopea pierrei (dalindingan isak) 



Total dipterocarps 



Total, all other species. 



Grand total... 



Diameter class in centimeters. 



100. 



Trees. 



Vol- 



Total. 



Trees. 



0.16 

 0.99 



2.01 

 12.09 



1.15 14.10 



1. 15 14. 10 



32.31 

 22.33 

 10.36 

 4.45 

 2.97 

 1.31 

 9.79 



83.52 

 30.60 



114.12 



Volume. 



53.27 



49.88 



40.23 



6.15 



4.55 



1.89 



14.31 



170. 28 

 33.61 



203. 89 



story are Shorea polysperma (tanguile) , species of Dipterocarpus 

 (apitong and panao), and a number of other dipterocarps. 

 Hopea pierrei (dalingdingan-isak) is the principal second-story 

 tree, and occurs in large numbers everywhere, except near the 

 edge of the forest where it has been largely removed by logging. 

 The above species occur in mixture with Machilus philip- 

 pinensis (baticulin), Palaquiwm spp. (nato), Vitex sp. (sasalit), 

 Astronia spp. (dungao), Mastixia philippinensis (tapulao), 

 Dillenia sp. (malacatmon) , and others, but the percentage of 

 dipterocarps both as to number of trees and total volume is 

 almost as great as in the forest of Negros, although the total 

 volume of the forest is much less. The data in Table VIII, com- 



