224 PHILIPPINE RESINS, GUMS, AND OILS 



per year, which would give a possible borneol yield of from 50 

 to 200 kilos per hectare. Although this plant grows vigorously 

 in the Philippines, it is questionable if it could be cultivated 

 profitably. 



Blumea balsamifera is a coarse, erect, half-woody herb 1.5 to 

 3 meters in height. The stems are 2.5 centimeters in diam- 

 eter. The leaves are from 7 to 20 centimeters in length, spear 

 shaped, and with toothed margins and short petioles. 



This species grows very abundantly in waste places in the 

 Philippines. It is frequently found in grass areas, as it readily 

 sprouts from the ground after the aerial parts of the plant have 

 been killed by fire. It is thus one of the comparatively few 

 species of plants which can withstand grass fires. 



