PLATK VI. 



FKU'rin 1 — 'I'ransverse section of clailode of ('crciis (jrartdiflorus, Haw., 

 showing from thr outer surface inwards — 



I. Kpiderniis with uneven cuticularisation. 



II. Dermis oi' coUenchyma of four layeis of cells with i^reatiy 

 strengthened cell-walls. 



III. Palisade parenchyma. 



IV. In the centre a stomatal tube. 



Fioi'PK 1 — Transverse section through the flower-bud of Pe.ireskia aculeaia. 

 Mill., showing |)arts of sevral petals and sepals. 



