Journal Royal Society ofN.S. W., Vol. LL t 191 7. Plate XXV. 



Pittosporum undulatum.— Radial section showing crystals in ray cells 

 on the extreme left * 45. 



I j: , 



Tarrietia argyrodendron. — Tangential section showing crystals at the 

 top and extreme right. * 45. 



