EXPLANATION OF PLATE 10 

 Giant Cedak [Thuja pUcala). 



The large figure is a branch in its natural pendent position, with full-sized but not 

 yet opened cones. Below at the left is the apex of a twig with staminate flowers, at 

 the right a pistillate flowering twig, and above it an end view of the same, five times 

 enlarged. Above at the right is a mature and opened cone, one and a fourth times 

 enlarged, and below a cone scale, from within, showing the seeds natural size, and 

 still lower a single seed twice enlarged. 



Drawing by Frederick A. Walpole. 



