EXPLANATION OF PLATE X. 



[Figures natural size, uxcept Avhere otherwise noted.] 



Fig. a, branch with yoiiug shoot of the season bearing a cluster of male flowers; h, male flower detached 

 showing basal iuvolucral brai'ts, magnified three diameters; e, branch bearing three subtcrminal female flowers; 

 (I, d, characteristically reflexed immature cones of one season's growth. 

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