130 



s. MATSUDA. 



cells which contain a (juantity of starch-grains, j)artly encloses the 

 bundles and faintly represents a biindle-sheath (PI. IV, Fig. 18, i ; 

 PI. IV, Fig. 19, ï). In Schizandra some parenchymatous cells 

 lying near the bundles contain crystals of calcium oxalate. These 

 crystals are found either singly in a cell or as an aggregate. In the 

 former case they attain a considerable size and are (3ctahednd ov 

 prismatic in form, but in the latter case their exact form is 

 indeterminate. Such crystals are not met witli in the stem. In the 

 existence of mucilage-reservoirs, as well as in other points not 

 specified here, the structure of the petiole agrees with that of the 

 stem. 



Blade. — The stomata are of the usual form. Cuticular ridges 

 are distinctly seen on the epidermis of the midrib. The arrange- 

 ment of the fibro-vascular bundles in the midrib is similar to 

 that in the petiole. Mucilage canals are found both in the 

 midrib and in other parts of the blade. In the latter place they 

 generally accompany the veins sent off from the midrib. Crystal- 

 bearing sclerenchymatous elements are found both in the midrib 

 and in the veins of Kadsum japonica, A\'hile they are rarely met with 

 in the leaf of SchiziUidra nvjva. On the contrary crystals both aggre- 

 gated and solitary are cojnously found in the midrib and veins of 

 Schizandra fiiyra, while they are rare in the leaf-blades of Kadsura. 

 Crystals forming aggregates are also found in the epidermal cells of 

 Sehizandm (PI. IV, Fig. IG). 



lloiil. — The (Tystal-bearing scJerenclniiiarous cells, the cells con- 

 taining oil-globules, and sc^me other })eculiar structures, which are 

 found both in the stem and leaf, are also met with in the root (Pi. 

 l\'. Fig. 11, I)). However, the sclerenchymatous sheath, which is 

 constantly found in the stem, is absent even in somewhat old roots. 

 The intercellular passages which serve as nmcilage-reservoirs are found 



