PINU8 133 



P. densiflora, Sieb. 



Syn. : P. Massoniana, Hort, not Lamb. 

 The Japanese red pine is found in Japan, especially in 

 the south, also in Korea and West Szechuen, and was 

 introduced to Europe by Siebold in 1 854. It is a favourite 

 tree with Japanese gardeners, and in addition to the 

 dwarf forms described there are many larger garden forms, 

 and also many artificially dwarfed specimens in Japan. 

 The arborescent type grows up to 100 feet in height, and 

 is not unhke the Scots pine — P. sylvestris — but its green 

 leaves and glaucous young branchlets easily distinguish 

 it from that species. 



P. densiflora, var. pendula, Mayr. 



A pendulous, sometimes prostrate, form which looks 

 best when allowed to fall over a bold rock. I have plants 

 ten years imported from Japan that, so far, are very 

 slow in growth, but specimen branches sent to me from 

 the Arnold Arboretum as var. prostrata of the same form, 

 are much freer. The Arnold Arboretum plant has leaves, 

 etc., normal. The leaves on my plants are somewhat 

 shorter and stouter than the type, but they are otherwise 

 normal. Beissner (ii. 438) states that in Japanese 

 gardens other dwarf forms are found: (a) var. aureo- 

 pendula ; (b) var. glohosa, a semi-globular bush with leaves 

 haK as long as the type; (c) var. Asamensis, a stunted 

 form. None of these, as far as I am aware, have yet been 

 introduced into European cultivation. 



P. densiflora umbraculifera, Mayr. 



SjTQ. : P. densiflora, var. TanyosJio (of Japan). 



Buds. — CyHndrical; dark brown; resinous. 



Branchlets. — Annual growth about 1 J inches ; glabrous- 

 light brown; raised pulvini. 



Leaves. — In twos; 1 J to 2 J inches; soft, slender, shghtly 

 twisted, light green, margins serrulate; resin canal 

 marginal ; leaf -sheath under J inch, dark brown, persistent. 



