Neomeris dumetosa , L amour. 585 
which assist in the work of attachment, were also met with 
(Fig. 5 a). No creeping rhizome-filaments were observed, 
nor any formation of a special food-containing reservoir, as 
described in Ace tabular ia ; but the storage of starch, in the 
form of large grains, throughout the whole of the rhizoid 
portion, was often very marked (Fig. 6). Once the thallus has 
assumed the whorled type of growth, branching of the main 
axis only occurs as an anomaly (Fig. 8) ; but in one specimen 
branching into two equal individuals occurred just above the 
first formation of the appendages of Stage II, and before it 
had become permanently fixed (Fig. 4). No case of branching 
was met with beyond Stage II, and this is perhaps important 
in reference to the branching of the main axis in Cympolia . 
Rejuvenescence of an axis on damage to the growing-point, 
and outgrowths due to wounds, may commonly occur ; the 
contrast between the distant nodes of the young shoot and 
the shortened internodes of the old axis being especially well 
marked in such a case (Fig. 3). 
Stage II. 
As already indicated, the nodes now tend to be formed 
closer together, and the whorls of members become more 
regular in development. The characteristic feature of this 
stage is the delimitation of a basal portion from the basal 
segment of the appendage by means of a typical perforated 
septum formed as a ring- wall in the segment ; the portion 
abstricted roughly equalling in length an internode of the 
main axis (Fig. 10 a). This takes place with great regularity 
and symmetry in all the new whorls, and these abstricted 
portions, on disarticulation of the remainder of the appendage 
to which they belong, persist as more or less complete whorls 
of short segments ; every segment retaining at its distal end 
a single scar, and thus presenting a marked contrast to the 
long basal segments of Stage I, which exhibit at their 
extremities the two scars of the first dichotomy (Fig. J). 
The 3-4-times dichotomizing appendage, which now appears 
to be borne at the end of this second type of basal segment, 
