Nymphaea


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Nymphaea

 

a genus of aquatic plants of the family Nymphaeaceae. They are perennial grasses with rhizomes and leathery, long-petioled, cordate leaves. The leaves have reddish undersides and float on the surface of the water. The flowers are solitary, large, and on long stalks; they generally have four green sepals and numerous petals of various colors. The fruit is globose, fleshy, with many seeds. There are more than 40 species distributed throughout the world; three species are found in the USSR. The European white water lily (Nymphaea alba) and the species N. Candida form clusters in lakes, ponds, and slow-moving rivers. The young rhizomes can be eaten after they are boiled or roasted. The pygmy water lily (N. tetragona), which has edible seeds and leaf buds, is less common. All three species are cultivated as ornamentals.

References in periodicals archive ?
The Nymphaeaceae is quite representative among aquatic macrophytes occurring in Pantanal areas, with seven Nymphaea species and one Victoria species (Pott & Pott, 2000).
Entre las especies que registran su distribucion mas septentrional en nuestro pais estan Cabomba palaeformis, Crinum erubescens, Echinodorus andrieuxii, Eichhornia heterosperma, Eleocharis mutata, Heteranthera oblongifolia, Hydrocleys parviflora, Nymphaea amazonum y Pontederia rotundifolia.
The aquatic vegetation consists of Typha angustata, Phragmites karka, Hydrilla verticillata, Potamogeton pectinatus, Nelumbium speciosum, Nymphaea lotus, Saccharum spontaneum, Zannichellia palustris and Vallisneria spiralis.
Species % Cover % Glyceria septentrionalis 88 13.34 12.15 Persicaria coccinea 72 10.66 9.94 Bidens cernua 96 6.90 13.26 Sparganium androcladum 48 9.04 6.63 Echinochloa muricata 68 5.20 9.39 Pontederia cordata 48 5.60 6.63 Phalaris arundinacea 44 3.72 6.08 Sagittaria brevirostra 52 2.90 7.18 Persicaria hydropiperoides 24 3.06 3.31 Ranunculus flabellaris 48 0.64 6.63 Nymphaea tuberosa 32 1.92 4.42 Acer saccharinum 36 0.18 4.97 Nuphar advena 20 1.08 2.76 Erechtites hieracifolia 24 0.42 3.31 Leersia oryzoides 12 0.74 1.66 Bidens frondosa 8 0.04 1.10 Bidens coronata 4 0.02 0.55 Totals 65.46 100.00 Bare ground and litter 15.36 Rel.
Nymphaea pygmaea 'Alba' has small white flowers, 'Helvola' is a free flowering yellow and 'Rubra' is red.
1 Mai 1997.--Type: Nymphaea L.; Nymphaeaceae Salisb., 1805.
. Water lily, Nymphaea `Froebeli' - Finally, this plant offers superb variety with lots of red, star-shaped flowers about 7.5cm in diameter.
Water lilies (Nymphaea) add a lovely splash of color when they bloom in warm weather.
Recent paleobotanical studies suggest that much of this leaf and rhizome material can be reliably assigned to extant Nymphaealean genera, namely: Nelumbo, Nuphar, or Nymphaea. Nelumbo is known from nearly complete remains in Reynolds Basin, Idaho, and as rhizomes in Stinking Water, Oregon.
Central ponds of open water are occupied by Nuphar advena and Nymphaea tuberosa.