Index. 
IX 
Figures. 
page 
4. A. Model of the stelar system of the rhizome of a young sporophyte of 
Danaea alata, Sm., viewed from below. B. Model of the internal 
stelar system of the rhizome of an old sporophyte of Danaea alata, 
Sm., viewed from above (West) 367 
5. Danaea alata, Sm. Front view of the model represented in Text-fig. 4, A 
(West) . 368 
6. Diagrammatic figures illustrating in transverse sections the changes that 
occur in the internal vascular system of the rhizome of an adult 
plant at the transitional region (West) 372 
7. Danaea alata, Sm. Diagrams illustrating transverse sections of the 
rhizome of an old plant at successively higher levels (West) . . 373 
8. Danaea nodosa, Sm. Transverse sections of the stem of a large plant, 
showing three concentric zones of bundles and a central strand 
(West) 374 
9. Danaea nodosa, Sm. Diagrammatic figures illustrating in transverse 
sections the changes and rearrangements that take place in the 
vascular system of an ill-nourished adult rhizome (West) . . 376 
10. A. Median longitudinal section through the apex of an adventitious bud 
of Danaea nodosa, Sm. B. Apical cell of same more highly magni- 
fied (West) 377 
11, Danaea nodosa, Sm. Diagrams illustrating transverse sections of 
a hand-cut series of an adventitious bud at successively higher levels 
(West) 378 
12. Danaea alata, Sm. Diagrams illustrating in transverse sections the 
changes and rearrangements that occur in the vascular strands of 
the rachis, including the region of the lowermost pinnae (West) . 380 
13. Ditto below the point of attachment of the lowermost pinnae (West) 381 
14. a. Danaea nodosa, Sm. Transverse section of the rhizome of an old 
(ill-nourished) specimen. B. Kaulfussia aesculifolia, Bl. Trans- 
verse section of an old specimen (West) 382 
15. Kaulfussia aesculifolia, Bl. Front view of a model of the stelar system 
of a portion of the rhizome of an old plant (West) .... 383 
16. Kaulfussia aesculifolia, Bl. Diagrammatic figures’ illustrating in trans- 
verse sections the changes and rearrangements that take place in the 
vascular system of the petiole of an adult plant (West) . . 385 
17. Marattia Cooperi, Mre. Model of the stelar system of the caudex of 
an old plant, viewed from one side (West) . . . » . . 388 
18. Ditto, viewed from above (West) .... ... 389 
19. Marattia Cooperi, Mre. Transverse section of the basal region of the 
stem of an old plant, showing numerous roots and leaf-traces 
embedded in the ground-tissue (West) ...... 389 
20. Danaea alata, Sm. Transverse and longitudinal sections of stem-apex 
of a very young sporeling showing the apical cell (West) . . 393 
21. Danaea nodosa, Sm. Ditto (West) ....... 394 
22. Danaea alata, Sm. Transverse section of stem-apex of a large sporo- 
phyte showing three meristematic blocks (West) .... 395 
23. Danaea nodosa, Sm. Ditto showing meristematic region (West) . 395 
24. Kaulfussia aesculifolia, Bl. Transverse section through the apex of an 
old rhizome showing initial cells (West) 396 
25. Danaea alata, Sm. Apex of small roots in transverse and longitudinal 
section respectively, showing the single initial cell (West) . *397 
26. Danaea nodosa, Sm. Longitudinal sections of small roots, showing 
variation in shape of the single initial cell (West) . . . 398 
27. Marattia Cooperi, Mre. Transverse and longitudinal sections of the 
apex of .a small root showing a single initial cell (West) . . 398 
