REVEGETATION OF TAAL VOLCANO 



205 



spontaneum Consocies is first in importance. The Themeda 

 gigantea and the Imperata cyhndrica Consocies are of less im- 

 portance- — the former in the northwestern part of the island and 

 the latter near Pirapiraso in land formerly cultivated. A 

 fourth consocies, dominated by Miscanthus siJiesis, is indicated 

 by the presence of a few clumps of this grass. 



i04 — 



TEET 

 - 997 



METCI^S 



LEVEL or 



UAKE. B0M80N 



, Fig. 4. Diagrams showing the successions exhibited between the plant as- 

 sociations on Taal Volcano, P. I. 1914. The approximate distribution in alti- 

 tude is shown by the extent of the lines with reference to the scale on the left. 

 The relative abundance of the associations at various altitudes is indicated by the 

 thickness of the lines. Arrows pointing above the horizontal indicate succession 

 to a higher genetic association. (Reproduced without change from Phil. Journ. 

 Sci., 9, C, No. 5.) 



The woody plants are easily divided into two formations: the 

 Parang or Shrub-Small-Tree Formation and the Tree Formation. 

 In the former is the Parang Association with numerous conso- 

 cies, among which the Ficus indica, Tabernaemontana, Acacia 

 farnesiana, and Morinda Consocies are conspicuous shrub 



