J 96 s. MATSUDA. 



ring enclosing the pith, as they do in the stem ; but constitute a 

 somewhat crescent-shaped oToup witli its conr^ave side turned to the 

 upper surface of the petiole. The xylem ])<)i-tion is incompletely 

 lignified as is proved hy the action of reno-eiits. In tlie phloëin no 

 sclerenchymatous fibres are present. The bundles are partly 

 enclosed by a row of parenchymatous cells containing starch-grains, 

 which perhaps represent a Inmdle sheath. In all other res])ects the 

 structure of the petiole is similar to that of the stem. 



Blade. — The cuticle is well developed. The fibro- vascular 

 bundles of the midrib are semi-circularly arranged, and a fcAv scleren- 

 chvmatoiis fibres accompany the bundles. The cells forming the 

 palisade-parenchyma lying at the midrib have their height diminished 

 and become almost round. Resin sacs are not found at least in 

 7. yrJiijiimim. 



Hoot. — An old root almost resembles the stem in general 

 striK'tiu-e. Tn the young root the arrauii'ement of the xylem-])lates is of 

 a diarch ty])e. The cells that constihite the endodermis remain cellu- 

 lose. Oil -drops are scattered about in the cortex of the young root. 

 l^o sclerenchymatous fibre is seen in the phlorm, even in old speci- 

 mens. 



Drimys. 

 T examined onlv a dried specimt^n of one s])ecies of this genus ; 

 namely, J), diprfala, ¥r. M.. which had r-ome from New South Wales, 

 and T can only give a few points about its antitomical characters, 

 since I have only a verv im])erfect knowledge of them. 



Tn general structure this species resembles /. rcliijiosiim^ but 

 there exist some decided structural ditferenres between them. Thus 

 in />. dipftala a great nu7nber of resin-sacs are present in the outer 

 oortex (PI. TTT, Fig. 12, B) and even in the phlo('m ; a well develop- 

 ed sclerenchymatous ring accompanies the fibro-vascular bundles, and 



