EXPLANATION OF THE FIGURES. 



PLATE XIII. 



Fig. I. Erect branch of Coriaria nepalensis seen from the side. X -j-- 



Note the decussate leaves arranged in four ranks on the 4-angled stem 

 with their upper surfaces at right angles to the rays of light coming 

 from above. The stem is not twisted. 

 2. Horizontal branch of Coriaria nepalensis, seen from above. X \. 



Note the distichous leaves with their upper surfaces practically horizontal 

 and at right angles to the rays of light coming from above. Also the 

 twisting of the 4-angled stem caused by the efforts of the leaves to 

 place themselves at right angles to the incident rays of light. 

 In both figures one side of the 4-angled stem is shown shaded throughout. 



