— Plate J. — 



Figs, i and 2. — Sarracenia purpurea. 



Figs. 3-6. -^ S. psiltacina. 



Figs. 7-12. — S. minor. 



Figs. 13-18. — S. Jonesii. 



Fig. I. — Nectar gland from surface of the nectar roll. 



Fig. 2. — Hair from outer surface of pitcher. 



Fig. 3. — Nectar gland from interior surface of the pitcher. 



Fig. 4. — Pitcher, cut lengthwise to show interior surface; a-h, transverse 



section of nectar ridge, its position indicated in the larger figure. 

 Fig. 5. — Juvenile leaf (after Goebel 1891). 



Fig. 6. — View looking into the entrance of leaf, such as in fig. 4. 

 Fig. 7. — Pitcher of S. minor. 

 Fig. 8. — Front view of same. Nectar droplets are indicated, as also 



in next figure. 

 jTjg g _ The lateral view of same, with section of the nectar roll and of 



the wing where indicated. 

 Fig. 10. — Surface view of nectar gland with a few adjacent imbricated 



cells. 

 Fig. II. — Detentive hair, from zone 4. 

 Fig. 12. — Nectar gland surface of nectar roll, S. minor. 

 Figs. 13-18. — Developmental series, pitcher of S. Jonesii. 

 Fig. 13. — The mouth begins to be seen. 

 Fig. 14. — Lips of mouth are seen. The lateral and basal views of this 



stage are seen in fig. 15. 

 jTjc i5 _ The lower edge of the mouth begins to extend, as the apex 



elongates. 

 Figs. 17 and 18. — The lower edge of the mouth has been extended as a 

 ridge, the ala ventralis. 



