205 



EXPLANATION OF PLATE XLVII. 



Anatomy of Nepenthes. — A and B sections of a stem ; a — h 

 the pith containing spiral vessels, lying in cellular tissue ; b — c wood, 

 consisting of long, lozenge-shaped, thick-sided cells, passing into rounded 

 cells as they near the pith, of small spiral vessels and dotted vessels'" 

 (or vasiform tissue) intermixed ; c — d a homogeneous layer of woody 

 tissue; d — e large, lax, thin-sided, cellular tissue, forming, with large 

 spiral vessels, a layer between the wood and bark ; e — -^ the liber or inner 

 bark, and f — y the cortical integument, or outer bark, containing fine 



spiral vessels. C. A portion of the cuticle of the inside of a pitcher, 



with the glands a, and the openings in the cuticle b b, left when the 



glands are removed. D. A section of the pitcher, made perpendicular 



to the cuticle of the inside ; b b cuticle closing in the gland, which is 

 evidently a kernel of small hard brown cells. 



EXPLANATION OF PLATE XLVIII. 



Anatomy of Nepenthes, continued. A. A highly magnified 



view of a stomate a, and a portion of the cuticle on the outside of a 

 pitcher. — C. The same less magnified, seen from the under side ; a the 

 stomates ; b the purple gland which reposes upon the stomates. — B. A 

 highly magnified view of a stomate a, and a portion of the cuticle of 

 the upper side of the true leaf. — D. The same less magnified; a a sto- 

 mates. — E. A highly magnified segment of a transverse section of a 

 tendril ; d d cuticle ; a a a row of elastic cords of vessels protected by 

 woody fibre next the outside ; b,f, and c,y, other elastic cords nearer 

 the centre, b being the mouths of vessels, and y curved masses of woody 

 tissue. 



