1922] ARBER—LEAVES OF FARINOSAE 81 
Flagellariaceae 
I hope to describe the leaves of this family in a later paper, so 
I will omit all discussion of them here; their most unusual feat- 
ure is that, in the genus Flagellaria, they have tendril apices. 
Restionaceae 
In this family, which consists of nineteen genera, plants with 
radical leaves are rare. The genus Anarthria, however, forms a 
notable exception, for it has basal leaves recalling those of Jris, 
which may either be ensiform or “radial.” Fig. 3 A represents 
the transverse section of the limb of Anarthria scabra R.Br. It will 
be seen that it has a type of anatomy resembling that of an Acacia 
phyllode, the bundles, which are in two series lying to right and 
left of the median plane of the leaf, having their xylems directed 
inward. The palisade parenchyma is interrupted at very short 
intervals by bands of fibers, one of which occurs between each of 
the main bundles and the epidermis, while others are associated 
with the smaller bundles, or occur independently. Fig. 3 B shows 
the margin of such a leaf, with the median bundle, on a larger 
scale. Two of the fibrous bands (/) are visible, and it will be seen 
that, in the marginal region, the palisade parenchyma passes over 
into thick-walled elements without contents. The epidermal cells 
also increase in size and in the thickness of their sclerised walls as 
the margin is approached. Fig. 4 A-C shows the leaf of Anarthria 
gracilis R.Br., which, instead of being ensiform like that of A. scabra, 
is radial. The limb (C), in which the fibrous sheaths of the bundles 
with their extensions to the epidermis form a conspicuous feature, 
is almost cylindrical in section. The leaves of Anarthria, however, 
are not typical for this family, in which it is usual to find cauline 
leaves alone. Such leaves generally have a well developed sheath, 
succeeded by a relatively unimportant limb, which may be flattened 
or cylindrical, but is often reduced to a mere point (examples occur 
in Dovea, Elegia, Lepyrodia, and a number of other genera). 
Fig. 1 A shows the appearance of the leaf of Restio tremulus R.Br. 
It has a sheathing base (s) which more than surrounds the axis, 
forming a ‘‘wrap-over.”” The same peculiarity in other members of 
this family may be carried to a further point; in a species of 
