188 
TWO VARIETIES OF 
In the true Nuphar lutea, or common form of the plant, 
the flowers are upwards of two inches in diameter ; the lobes 
of the leaves are approximated, and even cross each other ; 
the leaves are smooth, and their outline is regular, without 
sinuosity. 
In the larger Nuphar of the Corby Loch, the flowers 
are generally about an inch and a half in diameter ; the 
lobes of the leaves are also approximated ; the back of the 
leaf is very slightly pubescent, especially on the lobes ; the 
outline as in the last. 
In the smaller Nuphar of the same lake, the flowers are 
not more than one inch across ; the lobes of the leaves are 
widely separated ; the outline is irregularly waved, or sub- 
angular, the lobes being distinctly angular; and on the 
back of the leaf there is a good deal of fine whitish pubes- 
cence, especially about the middle nerve, and on the lobes. 
In the first, as has been said, the stigma is elliptical and 
entire ; in the second, elliptical, but waved ; in the third, 
rounded, and very distinctly dentate. 
The difference between the common form of Nuphar 
luiea, and that of the larger variety of the Corby Loch, is 
not great, being observed chiefly in the size ; and between 
the latter and the small variety, specimens occur of inter- 
mediate character. Hence, however different the common 
N. lutea, such as it is seen in the south of Scotland, and in 
the Island of North Uist, where it occurs in great perfec- 
tion in the lakes near Loch Maddy, may appear from the 
diminutive Nuphar of the Corby Loch, it is probable that 
they form the two extremities of the same specific form. 
The N. minima of Smith I have not seen ; but it is to 
be observed, that both it and the synonymous iV^. 'kalmiaim 
of HooKEE, have precisely the character of the small variety 
of N. lutea mentioned above, — excepting in the case of the 
margin, which Smith describes as green. The species of 
