Tubers in Nymphaea Lotus , var. monstrosa. 107 
As the bud increases in size, the calyx-leaves cease to grow 
in breadth, and become distorted, presenting an appearance 
which suggests that some injury may have been sustained by 
the plant (Fig. 4). Upon removing the calyx-leaves and hairs 
in this specimen, the form of the new leaves is well seen 
(Fig. 5)- The lamina and petiole are those of ordinary 
foliage-leaves, and the eared leaf-base corresponds exactly 
with that in the leaves of Nuphar . P'rom the base of each 
leaf are protruding several adventitious roots. As will be 
gathered from the figure, the expanded leaf-bases form an 
excellent protection for the younger parts. 
Fig. 6 represents a series of leaves from one bud. At^ the 
leaf-base is well developed, and bears at its apex the small 
point which is the rudiment of the lamina. At e the lamina 
is already becoming formed ; and d to a show the intercalation 
of petiole between leaf-base and upper leaf. The arrange- 
ment of these leaves, as far as can be followed, appears to be 
identical with that of the parts of the normal flower-bud. 
The sepals exhibit the same aestivation as is usual in 
Nymphaea -^ owers : one is quite exterior, the one opposite 
quite interior, and the lateral ones are half covered, half 
covering. The sepals' are followed by a whorl of foliage- 
leaves alternating with them, and, inside these, a second 
whorl alternating with the last. The rest of the elements 
could not be satisfactorily determined, because of the presence 
of buds which appeared to disturb the order. In Nymphaea 
alba the eight petals following the sepals form the first 
and 5 sepaloid leaves respectively, before the foliage-leaves commenced : in two 
buds borne by one of the plants figured (see Figs. 13, 15), the numbers were 4 and 
8 : while in three buds from a luxuriant specimen imported from Kew and growing 
at Cambridge, the numbers reached 10, 12, and 16 respectively. In these last buds 
the inner ‘ sepals ’ showed some similarity to petals, in fact might almost be 
regarded as petals which had turned green. And, just as in the normal Nymphaea 
flower there is a transition from petals to stamens, so, in many of these specimens, 
there may be traced a series of stages between the sheathing sepaloid leaves and 
the foliage leaves. In other specimens, and notably so in the one here figured 
(Figs. 4, 5), the leaves immediately following the calyx are markedly different 
from the sepals, and readily divisible into the leaf-base, petiole, and lamina of 
foliage-leaves. 
