424 dr. j. d. hooker on the bornean species of nepenthes. 



Tab. LXX. 



Nepenthes Edwardsiana, Low. 

 Fig. 1 . Fruit. Fig. 2. Portion of under surface of pitcher : — both magnified. 



Tab. LXXI. 



Nepenthes Lowii, H. f. 



Fig. 1. Portion of 6 raceme, and Fig. 2. of ? ; both nat. size. Fig. 3. S flower. Fig. 4. Young fruit. 

 Fig. 5. Portion of under surface of pitcher : — all magnified. 



Tab. LXXII. 



Nepenthes Rnjah, H. f. 



Fig. 1. 6 flower. Fig. 2. Portion of fruiting raceme. Fig. 3. Ripe fruit. Fig. 4. Portion of under 

 surface of pitcher: — Figs. 1, 3 and 4 magnified. 



Tab. LXXIII. 



Nepenthes albo-marginata. Hook. 

 Fig, 1. d flower. Fig. 2. ? flower. Fig. 3. Portion of under surface of pitcher : — all magnified. 



Tab. LXXIV. 



Illustrations of the Development of Nepenthes pitchers. 

 Fig. 1. Conical terminal bud of A^. gracilis, Korth. (A'', hevis, Hort.) (a, nat. size). 

 Fig. 1 b. Apex of the same rather more advanced, representing a leaf in its earliest state. 

 Fig. 2. Longitudinal section of the same. 

 Fig. 3. More advanced condition of ditto, showing the differentiation of the lamina below, and excurrent 



midrib and pitcher above. 

 Fig. 4. Still further advanced state of terminal bud and leaf. a. is a second leaf. 

 Fig. 5. Vertical section of apex of the same. ^ 



Fig. 6. Apex of leaf after the lamina, excurrent midrib, and pitcher are all differentiated. 

 Fig. 7. Apex of pitcher from the same, cut vertically. 

 Fig. 8. Vertical section of young pitcher of A^. Rafflesiana. 

 Fig. 9. Further developed pitcher of ditto. 

 Fig. 10. Vertical section of pitcher of ditto. 



Fig. 11. Convolute vernation of rudimentary lamina of leaf of A''. Rufflesianu. 

 Fig. 12. More highly developed pitcher of ditto, cut vertically. 

 Fig. 13. Very young pitcher of A^. phyllamphora ? 



Fig. 14. Vertical section of ditto. i 



Fig. 15. Further advanced pitcher of ditto. 



Figs. 16 and 17. Vertical sections of still further developed pitchers of ditto. 

 Fig. 18. Vernation of very young leaf of A^. Raffleshina. 



Fig. 19. Seedling Nepenthes from Borneo, from Mr. Low's Nursery : — nat. size. 

 Fig. 20. Ditto magnified, u, cotyledonary leaves. 

 Fig. 21. Cotyledonary leaf of ditto. 

 Figs. 22-25. Various views of leaves of ditto. 



All the above figures but fig. 19 are more or less highly magnified. 



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