Many beautiful Nymphaea hybrids have been raised between the tender and hardy varieties of different colours, and there are now in commerce lovely forms having not only white, but also yellow, rose, pink and carmine flowers.
Amongst hardy species of Nymphaea now much grown are candida, nitida, odorata, pygmaea and tuberosa, all with white, more or less sweet-scented flowers; flava, yellow, and sphaerocarpa, rose-carmine.
Aquatic plants with submerged and floating leaves: Glyceria fluitans, Ranunculus peltatus, Nymphaea (Nuphar) - lutea, Callitriche stagnalis, Potamogeton polygonifolius.
Thus, the Lent lily is Narcissus Pseudonarcissus; the African lily is Agapanthus umbellatus; the Belladonna lily is Amaryllis Belladonna (q.v.); the Jacobaea lily is Sprekelia formosissima; the Mariposa lily is Calochortus; the lily of the Incas is Alstroemeria pelegrina; St Bernard's lily is Anthericum Liliago; St Bruno's lily is Anthericum (or Paradisia) Liliastrum; the water lily is Nymphaea alba; the Arum lily is Richardia africana; and there are many others.
The nymphaea of the Roman period were borrowed from the constructions of the Hellenistic east.
Covering the ovary in Nymphaea (Castalia) and Nelumbium may be regarded as a form of disk.
Under the general head of water-lily are included the lotus of Egypt, Nymphaea Lotus, and the sacred lotus of India and China, Nelumbium speciosum, formerly a native of the Nile, as shown by Egyptian sculptures and other evidence, but no longer found in that river.
Such nymphaea existed at Corinth, Antioch and Constantinople; the remains of some twenty have been found at Rome and of many in Africa.
Water-lilies of the genera Nymphaea and Nelumbium occur.
In Nymphaea micrantha buds appear at the upper part of the petiole.