HARDY WATER PLANTS. 
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Limnanthemum (Floating' Heart).. — L. nymphaeoides 
is a native aquatic perennial, belonging to the Gentian order 
(Gentianaceae), and with roundish or heart-shaped, purple 
spotted leaves and bright yellow flowers, fringed at the edges 
and borne in July. A pretty plant to grow in shallow ponds or 
lakes, where it can root freely in the mud and its leaves float 
on the surface of the water. Increased by division ; also by 
seeds sown in the mud in spring. 
Limnocharis. — A genus of hardy aquatic perennials, of 
which L. Humboldtii, a native of Buenos Ayres, is the only 
species cultivated. It belongs to the Water Plantain order 
(Alismaceae), has roundish leaves which float on the surface of 
the water, tuberous root-stocks, and yellow flowers with golden 
stamens, borne in summer. This pretty plant will grow and 
blossom freely in shallow ponds or fountain basins. May also 
be grown in shallow tubs of w r ater sunk in the ground. 
In cold districts the latter is the best way, then the tub and 
plants can be removed to a greenhouse for the winter. In- 
creased by division in spring. Also known as Hydrocleis 
Commersonii. 
Menyanthes (Buck or Bog Bean). — M. trifoliata is a 
British perennial, often met with growing wild on the margins 
of rivers, ponds, etc. It belongs to the Gentian family (Gen- 
tianaceae), has creeping stems, trifoliate leaves, and white and 
pinkish fringed flowers borne in early summer. The flowers 
are fragrant. Although a wild plant it is worthy of cultiva- 
tion in shallow ponds, lakes, or water-courses. It is an easy 
plant to grow ; it is only necessary in spring to plant portions 
of the creeping stems in mud on the margins of water to get 
them to root and flourish. Increased by division in spring. 
Nymphsea (Water Lily). — The Nymphaeas are hardy 
aquatic perennials of great beauty, belonging to their own 
special order, Nymphaeaceae. They may fitly be described as 
ihe Queen of Water Plants, so beautiful and so fascinating 
are the rich and varied colours of the many species and hybrids 
now in cultivation. The Common White Water Lily (N. alba) is 
a native of ponds and water-courses in Britain, a strong grower, 
bearing white flowers freely in summer, and well suited for 
large and deep ponds. N. Candida is a Bohemian species 
with snow-white flowers ; N. flava, an American species with 
canary-yellow flowers ; N. odorata, another American species, 
with white and rose-tinted blossoms ; N. pygmaea, a small 
Asiatic species with white flowers ; N. sphaerocarpa, a rosy- 
carmine-flowered species ; and N. tuberosa, a white-flowered 
species from the United States. These are all worth growing 
