EXPLANATION OF PLATES V AND VI. 



Plate V. Fig. a, branch with two female amenta (second week of March), at the end of terminal young shoot 

 of the season densely covered with fimbriate silvery bract subtending the leaf buds which are still hidden in their 

 axils; l)elow are two ininiaturo cones of one season's growth and mature closed cone of two seasons' growth (( )ctober) ; 

 b, branch with the male inllorescence, the leaves cut away to show the dense cluster of male Howers which closely 

 surround the apex of the young shoot; c, fem.ale anient with basal .scales forming the calyx-like involucre; d, (I, (I, 

 carpellary or seed-bearing scales of female Mowers more advanced, lateral, ventral, and dorsal views— magnilied ."> 

 diameters; ,: detached male llower with basal iuvolucral scales, before opening (dehiscence); f, male llower, after 

 discharge of the pollen: g, three detached anthers, lower sides showing longitudinal slits of the pollen sacs .just 

 opening; lateral view of an effete anther; another seen from upper side showing the transverse semilunar crest- 

 all raagnitied ."> diameters ; h, detached female flower seen from above ; the cuspidate carpellary, or seed scale, bears 

 two strongly bilid naked ovules at its base ; i, female flower viewed from below, dorsal side ; the bract almost covers 

 the carpellary scale, leaving only the tip of the latter and the cusps of the ovules visible; magnilied .5 diameters. 



I'l.ATK VI. Fi"-. II, mature open cone, after shedding seed; h, cone scale seen from lower or dorsal side showing 

 the apophysis with low umbo and small, weak prickle; c, cone scale seen from upper or ventral side witli seed in 

 place; d, seed, upper side; e, seed detached from c, lower side; /, seed detached from wing, ujjper side, and </ the 

 same seen from lower side. 

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