Najas graminea

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]

Ricefield water-nymph
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Alismatales
Family:	Hydrocharitaceae
Genus:	Najas
Species:	N. graminea
Binomial name
Najas graminea Delile
Synonyms[1]
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.

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.^{[citation needed]}