EXPLANATION OF PLATKS V AND VI. 



Plate Y. Fig. a, l)ranch with two I'eujale aments (sfcoiid week of March), at the end of terminal young shoot 

 of the season densely covered with limhriate silvery hract snbtending the leaf Inids which are still hidden in their 

 axils ; below are two immature cones of one season's growth and mature closed cone of two seasons' growth (October) ; 

 I), branch with the male inflorescence, the leaves cut away to show the dense cluster of male flowers which closely 

 surround the apex of the young shoot; c, female ament with basal scales forming the calyx like involucre; d, d, d, 

 carpellary or seed-bearing scales of female flowers more advanced, lateral, ventral, and dorsal views — magnified 5 

 diameter.s; e, detached male flower with basal involucral scales, before opening (dehiscence); /, male flower, after 

 discharge of the jiollen; ;/, three detached anthers, lower sides showing longitudinal slits of the pollen sacs just 

 opening; lateral view of an eft'ete anther; another seen from upper side showing the transverse semilunar crest — 

 all magnified 5 diameters; h, detached female flower seen from above; the cuspidate carpellary, or seed scale, bears 

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

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



Plate VI. Fig. a, mature open cone, after shedding seed; 6, cone scale seen from lower or dorsal side showing 

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

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

 same seen from lower side. 

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