Fig. 
ol. 
52. 
- Todea hymenophylloides. ‘The stele in transverse section, 
. Todea barbara. 
ON THE ANATOMY OF TODEA. 
Todea hymenophylloides. Transverse section through. the outer edge of the pith showing the 
cells of the internal endodermis, en’. m=pith-cells ; maz— inner tracheids of the xylem. 
Todea superba. Diagram of the stele in transverse section.  //—leaf-traces; r=roots; 
a— position of large tracheids. Pp. 243, 248. 
. Todea superba. Large tracheids, æ (fig. 29, a), in longitudinal section. P. 248. 
. Todea superba. The large tracheids, x, in transverse section. 
. Todea superba. Transverse section near the base of the stem. s=sieve-tubes ; en, position 
of the endodermis, the cells of which have been torn. 
. Todea barbara. Transverse section. Lettering as in previous figures. | P. 245. 
. Todea barbara, Diagrammatic sketch of a radial longitudinal section through an outgoing 
leaf-trace and the outer edge of a medullary ray. 
. Todea superba. Diagram illustrating the exit of a leaf-trace. s=sieve-tubes. 
. Todea barbara. Transverse section in the protoxylem region of the young frond shown in 
Pl. 30. fig. 51, ent at the level o P. 248. 
. Todea hymenophylloides. Transverse section of the stele close to the base of a stem ; cut from 
the same stem as that represented in the other figures of this species. 
. Todea barbara. Diagram to show the passing out of a leaf-trace. s’=group of sieve-tubes. 
This figure represents the appearance of a section through a b in fig. 34. 
. Todea barbara. Diagrammatic sketch of a transverse section at a slightly higher level than 
fig. 38 (c d, fig. 34). 
Todea barbara. "Two of the sieve-tubes, s', of fig. 39. 
PLATE 30. 
- Todea superba. Transverse section showing the xylem of the stele as a continuous band. 
Todea barbara. Lettering as in previous figures. 
Todea hymenophylloides. Transverse section through the pith. s/=sclerous group in the 
centre. 
en, en’=outer and inner endo- 
dermis. 
Portion of the stele of a leaf in transverse section. px =protoxylem ; 
c-— groups of mucilage-sacs. 
Todea hymenophylloides. A leaf-trace. surrounded by an endodermal layer, en, leaving the 
stele of the stem. : 
Todea hymenophylloides. Part of a transverse section of the stele near the apex of the stem. 
Todea hymenophylloides. Transverse section through a young stem, at a slightly higher level 
than fig. 25, Pl. 29, 
Todea hymenophylloides. Transverse section. 
Todea barbara. Radial longitudinal section through an outgoing leaf-trace, //, and part of the 
xylem, sé, left in the stele ; sl, sclerous element; rt, tracheids passing out to a root.. 
Todea barbara. Apex of frond. h=filamentous hairs. 
~~ barbara, Transverse section throngh the stele of a small “crown” attached’ to a large 
plaut, ` 
