PINACE^ 333 



the lower surface. In Hondo, the main island of Japan, there is 

 a form which Mayr has separated as a species under the name of 

 P. ho7idoensis. This is said to have the young leaves tinged with 

 red and the shoots of the second year red in colour, but Wilson, 

 who has lately made a careful study of P. jezoensis in its native 

 habitats, and has examined many specimens from widely 

 separated localities, is unable to recognize more than one species. 

 There appear to be two forms in cultivation, however, which may 

 be characterized as follows : 



Var. typica. 



Young shoots yellowish brown or yellowish grey. Leaf -cushions 

 slightly swollen. Leaves acute, slender, dark green on the dorsal 

 surface. Rare in cultivation. 



Var. hondoensis, Rehder. 



Picea ajanensis, var. microsperma; P. hondoensis, Mayr. 



Shoots light reddish brown. Leaf-cushions much swollen. 

 Leaves shorter and more curved, obtuse, dull green on the dorsal 

 surface. This is the form usually found in cultivation in Britain. 



Wood light, soft, long-fibred, creamy white ; used for general 

 joinery, boxes, paper pulp, and other purposes in Japan, where it 

 forms an important forest tree. 



In Britain it is confined to gardens and to scientific collections 

 of trees, where it grows slowly and is not a general success. It 

 has no qualifications to recommend it for commercial planting 

 here. 



Bot. Mag. t. 6743 (1884); Gard. Chron., March 20, 1920, p. 139; Wilson, 

 Conifers of Japan, 44 (1916). 



Picea Koyamai, Shirasawa. 

 Koyama's Spruce. 



A smaU tree scarcely exceeding 60 ft. in height, with a trunk 

 up to 4 ft. in girth. Bark grey-brown, lightly fissured, scaling ofiE 

 in paper-hke, oblong fiakes. Branches dense, slender, horizontal, 

 eventually turning upwards and forming a spire-like or pyramidal 

 crown like that of the common spruce. Young shoots reddish 

 brown, slightly glaucous, becoming pale grey with age, glabrous 

 or with scattered glandular hairs which are more conspicuous 

 in the furrows. Biuls conical, shining brown, resinous. Leaves 

 crowded, dark green, often somewhat glaucous, stout, straight or 

 slightly curved, |— | in. long or more, quadrangular in section, 

 acute or obtuse at the apex with Unes of stomata on all surfaces. 

 Cones cylindrical, 2-4 1 in. long, pale green when young, pale 

 shining brown when ripe ; scales broad and rounded with finely 

 toothed margins. 



