146 



S. K. HYUN 



Figure 25. Volume growth of an average Pinus arrnandii in a 

 natural stand on Mt . Alishan, Taiwan. Drawn from data provided 

 by Mr. Jih-Ching Liao, Assistant Professor of Dendrology, Taiwan 

 University, Taipei, Taiwan. 



The growth performance under introduction is not known, but there is 

 a report (Dallimore and Jackson, 1923) that it grows rapidly at 

 Kew in light, well-drained loam under similar conditions to P. exoelsa 

 Wallich (Syn. P. wallichiana A.B. Jacks.). Trees 20 years old cone 

 freely and some of the seeds are fertile. Two planted stocks of P. 

 arrnandii at the Asakawa Experimental Forest in Tokyo, Japan, are not so 

 healthy (Fig. 26). 



TIMBER QUALITY 



P. arrnandii is characterized by pale, yellowish -white sapwood and 

 yellowish-brown heartwood which is clearly distinguishable from the 

 sapwood. It is straight-grained and medium- to fine-textured. Growth 

 rings are distinct, wide, and uniform in width (Fig. 27). Transition 

 from springwood to summerwood is abrupt and delineated by a broad band of 

 darker summer wood. Wood rays are very fine and not visible to the naked 

 eye. Under a hand lens they appear to be whitish or brownish and contain 

 a horizontal resin duct, forming a fine, close fleck on the quarter surface. 



