SKETCH OF THE CONIFERS OF JAPAN. 



269 



f 



the leaves. Fig. 3 shows this sheath around the young leaf 

 Fig. 4 shows the base of the leaves after the sheath has fallen 

 off. Leaves, five in each sheath (fig. 5), persistent for three 

 years, pointed, but not sharp, sleader, filiform, flat or slightly 

 convex on the back, keeled on the opposite side, making the leaf 

 trigonal, sides and keel denticulated, from 3 to 4 inches long, 

 with no stomata on the back, except a few i^iint traces towards 

 the point (fig. 0), and several rows of stomata, 5 or 6 on each side 

 of the keel (figs* 7 and 8). The leaves in clusters towards the 



Fig. 8, 



Fig. 6. 



Fi;r. 7. 



end of the branchlets (fig, 9). Cones biennial, erect, subsessile, 

 ovato-cjHndrical obtuse, thick, 4|. inches long (see fig. 1 above). 

 Scales of the cone numerous, broadly rhomboido-cuneiform from 

 the base, somewhat pointed and reflexed at the apex, coriaceous, 

 woody, glabrous, longitudinally rugose, of a dirty yellowish-brown, 

 and deeply hollowed out on the inner side to receive two seeds 

 (fig. 10). The outer side is equally hollowed out by the impress 

 of the seeds lying opposed to it, showing sometimes two hollows, 

 sometimes three, according to the position the seeds behind it 

 have occupied (fig. 11). It is as if the scales had been soft, and 

 yielded to the growth of the seeds on every side ; in some in- 

 stances they hollow it out so much as to break through and 

 leave holes at the deepest part. Seeds large, tvingJess, oblong, 

 subangulate, somewhat compressed or impressed on the sides, and 

 somewhat like those of the stone-pine but not so large (fig. 12)* 

 Shell, or test hard, fawn-coloured, smooth, opaque, the interior 

 tunic brown. Embryo with from 11 to 13 cotyledons. 



It is allied to the next species, Phms parvijtora, which also 



