Najas graminea

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Ricefield water-nymph
Najas graminea.JPG
Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Hydrocharitaceae
Genus: Najas
N. graminea
Binomial name
Najas graminea
  • Caulinia alagnensis Pollini
  • Caulinia fragilis var. intermedia (Balb. & Nocca) Nyman
  • Caulinia graminea (Delile) Tzvelev
  • Caulinia intermedia Balb. & Nocca
  • Caulinia microphylla Balb. & Nocca
  • Caulinia serristipula (Maxim.) Nakai
  • Najas alagensis Poll.
  • Najas microphylla (Balb. & Nocca) Rchb.
  • Najas seminuda Griff.
  • Najas serristipula Maxim.
  • Najas tenuifolia Asch.

Najas graminea, also known as ricefield water-nymph[2] is a species of aquatic plant found in freshwater habitats, especially still or slow-moving waters, like ponds and rice fields. It grows to a maximum length of 30 cm. The flowers are monoecious. The flowering season is from July to September.[3][4][5][6]

The natural distribution of this annual plant covers most of Africa as well as the Middle East, Central Asia, East Asia, Southeast Asia, New Guinea, New Caledonia and northern Australia. It has become naturalized in Spain, Italy, Bulgaria, Crimea and California.[7] This plant is also commercialized in the aquarium trade.


  1. ^ The Plant List
  2. ^ "Najas graminea - Ricefield waternymph -- Discover Life". Retrieved 2017-01-31.
  3. ^ "Najas graminea Ricefield waternymph PFAF Plant Database". Retrieved 2017-01-31.
  4. ^ Alire Raffeneau Delile. 1813. Description de l'Égypte, . . . Histoire Naturelle, Tom. Second 2: 282, pl. 50, f. 3. Najas graminea
  5. ^ Tzvelev, Nikolai Nikolaievich. 1976. Novosti Sistematiki Vysshikh Rastenii 13: 20, Caulinia graminea
  6. ^ Triest, Ludwig J. 1988. Mém. Acad. Roy. Sci. Outre-Mer, Sci. Nat. Nouv. Sér. 22(1): 143, Najas graminea var. longidentata
  7. ^ "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew". Retrieved 2017-01-31.

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