— Plate ij. — 



Figs. 1-5 — Pinguicula. 



Fig. I. — Series showing a leaf on different days after capture of prey, 

 Oct. 2, 3, 4, 6, and 7., 1939. The maximum amount of inrolling of the 

 margin observed is indicated. P. vulgaris (of California). 



Fig. 2. — Digestive glands from the upper leaf surface. 



Fig. 3. — Adhesive gland. 



Fig. 4. — Glands from scape. 



Fig. 5. — Section through margin of leaf, showing the large terminal 

 tracheid. 



Figs. 6-24. — Drosera. 



Fig. 6. — Longitudinal section through the glandular capital of a tentacle. 



Fig. 7. — Transverse section through a tentacle stalk at the narrow region. 



Fig. 8. — Transverse section through the gland of tentacle. 



Fig. 9. — Transverse section through the gland of a marginal tentacle of 

 D. rotiindifolia {see fig. ii). 



Fig. 10. — Apex of a tentacle gland showing exfoliated scale-like par- 

 ticles, seen lying in the mucilage secreted. 



Fig. II. — Longitudinal section through the gland of a marginal tentacle 

 of D. rotiindifolia. 



Fig. 12. — Gland of tentacle after thorough treatment with sulfuric acid. 

 Only cuticular membranes left. 



Fig. 13. — Surface view of the outer epidermal cells of a tentacle gland 

 to show the buttresses. 



Fig. 14. — Living tentacle gland. The mucilage was entirely removed, 

 the gland was then placed in mineral oil. Droplets of mucilage ap- 

 peared. 



Fig. 15 ,— Section of leaf: absence of palisade. 



Fig. 16. — Glandular trichome from petiole {D. gigantea). 



Fig. 17. — Apical view of gland shown in fig. 22. 



Fig. 18. — Small gland from tentacle stalk. 



Fig. 19. — Longitudinal section of the apex of a leaf rhizoid of D. ery- 

 throrhiza. 



Fig. 20. — A young leaf of D. pygmaea, showing the immense stipules. 



Figs. 21 and 22. — Sessile glands of D. Whittakeri. 



Fig. 23. — Sessile gland of D. capensis. 



Fig. 24. — Scarious trichomes from petiole of D. rotuniifolia. 



