Index . 
Vll 
b . Figures. 
1. 
2 . 
3- 
4- 
5- 
6 . 
7- 
8 . 
9 -I 5- 
16, 17. 
18. 
19. 
20. 
21. 
22, 23. 
24. 
25-7* 
28. 
29. 
30. 
32 ; 
31 - 
33- 
34- 
35- 
2. 
3- 
1-3* 
4- 
5* 
A-D. 
1 - 6 . 
7- 
8-14. 
I— 7* 
PAGE 
Section across rhizome (Lang).4 
Sections of the stele of a large rhizome (Lang).7 
Sections from rhizome (Lang).8 
Sections through branching specimen (Lang).16 
Section of rhizome bearing branch (Lang).21 
Sections of stele of branching specimen (Lang).22 
Sections of the rhizome of a small plant (Lang) . . . .29 
Sections to show progression in size and stelar complexity (Lang) . 33 
Apparatus for growing sterile sand cultures (Rayner) . . .106 
Sterile seedlings from agar cultures (Rayner) ..... 107 
Seedling from germinator, infected normally (Rayner) . . .107 
Seedlings from germinator, delayed infection (Rayner) . . .109 
Orchis flower (Matthews).155 
Column from Orchis purpurea (Matthews) . . . . . 1 56 
Triandrous flower (Matthews).156 
Section through bud of normal flower (Matthews) . . . . 157 
Parnassia nubicola, Wall.: section of xylem group in filament 
(Arber).160 
Avena sativa : embryo in median section (Sargant and Arber) . 161 
Avena sativa: young seedling in median section (Sargant and 
Arber).163 
Iris pseudacorus : seedling (Sargant and Arber) .... 164 
Diagram of seedling, to illustrate how the stalk of the cotyledon 
might fuse with the hypocotyl (Sargant and Arber) . . . 164 
Elettaria sheath, showing vascular skeleton (Sargant and Arber) . 166 
Vascular skeleton of scutellum, mesocotyl, and. coleoptile in seedling 
of Ayena type (Sargant and Arber).166 
Vascular skeleton in imaginary type (Sargant and Arber) . .166 
Bundles in sucker and sheath of Tigridia (Sargant and Arber) . 168 
Avena sativa: structure of seedling (Sargant and Arber) . 170,171 
Avena sativa: structure of axis in seedling (Sargant and Arber) i 74, 175 
Zizania aquatica: seedling (Sargant and Arber) . . . . 179 
Zizania aquatica: structure of axis in seedling (Sargant and Arber) 180 
Sorghum vulgare: seedling (Sargant and Arber) .... 186 
Zea Mays : mesocotyl in transverse section (Sargant and Arber) . 192 
Coix Lacryma-Jobi: structure of seedling (Sargant and Arber) . 196 
Coix Lacryma-Jobi: mesocotyl in transverse section (Sargant and 
Arber).197 
Triticum vulgare: seedling (Sargant and Arber) .... 200 
Triticum vulgare : axis in transverse section (Sargant and Arber) . 202 
Hordeum vulgare : axis in transverse section (Sargant and Arber) . 205 
Elettaria Cardamomum : structure of sheath and hypocotyl (Sargant 
and Arber) ........... 210 
Amomum angustifolium : seedling (Sargant and Arber) . . 212 
Roscoea purpurea : first node in three seedlings (Sargant and 
Arber).213,214 
Brachychilum Horsfieldii: seedling (Sargant and Arber) . . 215 
Commelina coelestis: sheath and adjacent parts (Sargant and 
Arber) . 217 
Umbilical attachment theory (Lindsey).224 
Abscission layer theory (Lindsey).225 
Bothrodendron minutifolium (Lindsey).227 
Divergences of traces in cones (Browne).244-6 
Reconstruction of xylem of cone in the region of branching (Browne) 250 
2, 2 bis , 3. 
4> 5- 
6 . 
7 - 
Reconstruction of stele of stem and of abortive branch (Browne) 
Vegetative propagation in Drosera (Salisbury) 
Development of mucilage canals (West) .... 
Section of adult mucilage canal (W est) .... 
Tannin cells and duct (West). 
Types of stamens and styles in Compositae (Small) . 
Bivalent chromosomes in various shapes and forms (Woolery) 
Conidial formation and liberation (Brierley) . 
Vascular system at base of lamina in Cheiropleuria (Bower) 
Venation of Dipteris (Bower). 
Juvenile leaves of Cheiropleuria and Platycerium (Bower) 
Separation of leaf-trace in Dipteris (Bower) 
Relations of leaf-trace and lateral bud to stele of axis (Bower) 
• 255 
• 3°9 
412,413 
. 414 
418-20 
462-4 
. 478 
• 487 
. 498 
. 499 
. 501 
. 504 
• 505 
