138 DWAEF AND SLOW-GROWING CONIFERS 



I have met with none of its dwarf forms in European 

 cultivation, but Mayr (" Abiet. de Japan," 1890, p. 89) 

 mentions several in cultivation in Japanese gardens of 

 which the most distinct seem to be : 



P. Thunbergii, var. glohosa. — Described as a compact 

 bushy globular form. 



P. Thunbergii, var. tortusa. — A form with twisted and 

 contorted branchlets. 



P. Thunbergii, var. pendula. 



For the supposed dwarf form of this — P. tabulceformis 

 — see under P. densiflora, var. umbraculifera. 



P. parviflora, Sieb. and Zucc. 



A small compact Japanese pine ; introduced into Europe 

 in 1846. It grows so slowly that it is frequently utihsed 

 in small gardens and for lawn planting. Var. glauca is 

 even more suitable for such purposes. Many of the 

 Japanese artificial dwarf pines are trained from this 

 species ; they also dwarf it by grafting it on P. Thunbergii, 

 an uncongenial stock. 



P. parviflora, var. brevifolia, Beiss. (ii. 358; "jVIitt. d. d. 

 d. Ges.," 1900, p. 95). 



Buds. — Ovoid, not acuminate; about \ inch. Scales 

 with some of their tips free. 



Branchlets. — With shght scattered pubescence. Annual 

 growth J to 1 inch. 



Leaves. — In fives, about | inch; very thick, stiff, and 

 curved; ending in a blunt apex; green outside, very 

 glaucous white inside. Persistent two to three seasons. 

 Leaves on current year's branchlets very crowded, tightly 

 pressed to one another in their bundles, and the bundles 

 to the branchlet. 



Leaf-sheath, f to | inch, deciduous; leaf margins 

 sHghtly serrulate. 



A very slow-growing pine, making as a rule a low, 

 broad pyramid, but occasionally making a rounded bush. 



Beissner ascribes its introduction into Europe to Barbier 



