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S. K. HYUN 



On Taiwan, the soils on which P. armandii is thriving are derived 

 from tertiary shale and slate. Armand pine is found commonly on mountain 

 stony soils with fair growth, but it shows best growth on mountain humus 

 soil. However, it also occurs on Yellow Earths and Red Loams, and in some 

 locations grey-brown podsolic soils are formed under the natural forest 

 of P. armandii. On both the Chinese mainland and Formosa, P. armandii 

 is growing at high elevations which belong to the temperate forest zone 

 (Jih-Ching Liao, personal communication) . 



SILVICULTURAL CHARACTERS 



Armand pine is a tree up to 20 m in height, with widespreading 

 horizontal branches and thin, smooth, greenish bark (Fig. 23). Leaves, 

 in fives and persisting 2 to 3 years, are slender, 8 to 15 cm long, 

 serrulate, bright green spreading or drooping, usually sharply bent near 

 the base. Cones are cylindrical. 



' 



Figure 23. Bark of a 40-year-old 

 Pinus armandii (H = 15 m, DBH = 

 .4m, photo by Mr. J.-C. Liao). 



Germination of seed is quite easy, as is natural regeneration. 

 However, it is recommended that the seedlings be raised in polyethylene 

 bags by transplanting each cotyledonal seedling into the bag when they 

 reach 5 to 6 cm in height. Seedlings should be planted on rainy days. 

 In order to prevent frost heaving, trampling around the planting stock 

 during the first winter after planting is needed (Liao, personal 

 communication) . However, artificial planting seems not to be a common 

 practice in either the Chinese mainland or Formosa. 



