BY ALEX. G. HAMILTON. 771 



(1) The cuticle, which does not differ from that elsewhere on 

 the leaf. 



(2) A thick-walled epidermis, the cells often containing proto- 

 plasm. 



(3) A row of bottle-shaped cells, of very large size, arranged 

 touching each other at their large ends, but with spaces between 

 the necks, which point to the mesoph3'-ll (fig. 14«). This occurs 

 over all the leaf. 



(4) The palisade-tissue which fills in between the necks of the 

 bottle-like cells and below them. This is moderately dense, and 

 the cells full of chloi-oplasts. 



(5) A layer of close spongy parenchyma, which in all parts of 

 the leaf is penetrated a little above the lower epidermis by 



(6) A layer of thick-walled apparently empty cells (fig. lib), 

 which stain very deeply, and are, I think, 4-armed, as whether 

 sections are made parallel, or at right angles to the midrib, cut 

 ends are seen, circular and thick- walled. Both these and the bottle 

 cells give a bright purple with ferric chloride, and are most likely 

 tannin-sacs as in Pennantia. In fresh sections both kinds 

 of cells are transparent and colourless, but in old spirit specimens 

 they are bright brown. Tliis layer divides in the same way as 

 that in Pennaittia, one part going to the roof and the other to 

 the floor of the domatium. Those above are of normal size, 

 while those below are smaller and more scattered. 



(7) The epidermis resembling that of the upper surface. 



The roof and floor of the domatia are irregular, almost papillose, 

 and stomata occur in great numbers on the elevations. Vessels 

 are present in all the walls. 



R. STiPULARis, F.v.M. — The leaf is very large, thick, fleshy and 

 shining, and has very thick veins. The cavities are small and 

 closely covered inside with hairs like those of Coprosma. These 

 all point towards the orifice, so that looking down into it a close 

 mat of points fills up the opening. This last is small and elliptical. 



The epidermis is thick-walled; the palisade-parenchyma is com- 

 posed of 5 or 6 rows of small oval cells closely packed; the spongy 



