Nymphaea nouchali in Australia occurs in ditches and
swamps along the coast where the water is slightly saline. The
Wonga Beach population is in fresh water. This is supposed to
be the same as N. stellata (now N. nouchali) from
Asia. Some preliminary DNA was run on this plant and may show
that it is not. It was mistaken for many years in Australia for
Its natural range in Australia is along the north coast of
Queensland and then along the north coast of the Northern Territory.
One population I saw in the Northern Territory had white flowers.
The plant size varies. They may be very small, almost as small
as N. minuta or as large as N. 'Daubenyana'. The
blossom is cup-shaped with the sepals fused at the bottom. This
is similar to N. minuta. They may be closely related.
I have not had much luck in growing it. I can get the seed
to germinate, but they remain tiny. Carlos Magdalena from the
Royal Botanic Garden, Kew, has grown out some of my seed and
had some success by germinating the seed in slightly saline water
and then growing the plant in the same situation. The plants
in nature produce abundant seed and are a typical Brachyceras.
They have a pleasant scent.