BROOK-SIDE, WATER-SIDE, AND BOG GARDENS. 71 
where it was desired to encourage the growth of the Nym- 
phea. Thus arranged it would not spread too much. But it 
is not difficult to prevent the plant from spreading; indeed 
I have known isolated plants, and groups of it, remain of 
almost the same size for years. The Yellow Water Lily, 
Nuphar lutea, though not so beautiful as the preceding, is 
well worthy of a place; and also the little N. pumila, a 
variety or sub-species found in the lakes of the north of 
Scotland. 
Then there is the fine and large N. advena, a native of 
America, which pushes its leaves boldly above the water, and 
is very vigorous in habit. It is very plentiful in the Man- 
chester Botanic Garden, and will be found to some extent in 
most gardens of the same kind. The American White Water 
Lily (Nymphea odorata) is a noble species, which would 
prove quite hardy in Britain. It is a pity this noble aquatic 
plant is not more frequently seen, as it is quite as fine as our 
own Water Lily. Rose-coloured varieties are spoken of, but 
are not yet in cultivation here. 
One of the prettiest effects I have ever observed was 
afforded by a sheet of Villarsia nympheoides belting round 
the margin of a lake near a woody recess, and before it, more 
towards the deep water, a group of Water Lilies. The Vill- 
arsia is a charming little water-plant, with its Nymphea-like 
leaves and numerous golden-yellow flowers, which furnish a 
beautiful effect on fine days, under a bright sun. It is not 
very commonly distributed as a native plant, though, where 
found, generally very plentiful. 
Not rare—growing, in fact, in nearly all districts of 
Britain—but beautiful and singular, is the Buckbean or 
