252 Bower . — On the Pitcher of Nepenthes. 
DESCRIPTION OF FIGURES IN PLATE XVI. 
Illustrating Professor F. O. Bower’s paper on the leaf of Nepenthes. 
Nepenthes , sp. : Figs. 1-4. 
Fig. 1. Apex of young leaf, a, with young leaf, b, seen in profile, x 36. 
Fig. 2. Next older leaf of the same bud seen in full face; c, cavity; w, wings. 
x 36. 
Fig. 3. An older leaf with the lid,/, already present; ap, apical spur. x 36. 
Fig. 4. A leaf still older ; as , the part which forms the pitcher; xx, the point 
of origin of the tendril, x 20. 
Figs. 5-8, Nepenthes phyllamphora . 
Fig. 5. Apex of stem, and young leaf ; A as seen full face ; B in profile, x 36^ 
Fig. 6. A somewhat older leaf; ap , apical spur; /, lid ; c, cavity. X 36. 
Fig. 7. Another leaf slightly older, x 36. 
Fig. 8. A much more advanced leaf, showing irregular growth of the apex, ap. 
x 18. 
Figs. 9-17, Nepenthes distillatoria. 
Fig. 9. Young leaf in full face, x 36. 
Fig. 10. Young leaf in profile, x 36. 
Fig. 11. Apical portion of an older leaf in full face. x 36. 
Fig. 12. do. do. in profile, x 36. 
Fig. 13. do. do. in full face and in profile, somewhat 
older, x 36. 
Fig. 14. A leaf more advanced; lettering as before, x 36. 
Figs. 15^16. Leaves in which the lid has covered in the cavity of the pitcher. 
Fig. 16 shows irregular development of the apical spur, x 36. 
Fig. 17. An older leaf of the same, showing very clearly the two-lobed character 
of the lid of the pitcher, x 36. 
