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Transactions. 



The phloem contains a fairly large amount of parenchyma. The xylem 

 elements are very regularly arranged. The xylem contains only a very 

 small number of tracheae ; it is composed almost entirely of wood-fibres 

 and wood-tracheides. The fibres and tracheides have fairly thick cell- 

 walls. The tracheides are j)itted. 



Fig. 3. — Hymsnanthera dentata var. alphia. Transverse section of stem 

 ( X 175). a, cork ; b, oil in cortical cells ; c, jjoricycle fibres ; 

 (I, ])hl()em ; e, medullary ray ; /, pith with starch in cells. 



The medullary rays are fairly numerous ; they are uniseriate and have 

 tliickened lignified walls. The cells contain starch. 



The pith is solid, and consists of very closely packed rounded or polygonal 

 cells with thickened lignified walls. These cells contain numerous starch-grains. 



