Ittnera major (All.) C.C.Gmel.
Ittnera najas C.C.Gmel.
Najas fluviatilis Poir.
Najas fucoides Griff.
Najas gracilis (Morong) Small
Najas intermedia Gorski
Najas laevis Lojac.
Najas latifolia A.Braun
Najas latior F.Muell. ex K.Schum.
Najas major All.
Najas maritima Pall.
Najas microcarpa (A.Braun) Bolle ex Christ
Najas monosperma Willd.
Najas muricata Thuill.
Najas polonica Zalewski
Najas tetrasperma Willd.
Common Name: Spiny Naiad
Plant growing in native habitat
Photograph by: Panek
Spiny naiad is an aquatic, herbaceous, perennial plant. A variable plant that grows entirely under water, its bright to pale green foliage is produced on stems up to 80cm long[
The plant is sometimes gathered from the wild and used for food. It is sold in local markets in Hawaii.
Cosmopolitan, found in most areas of the world, but absent from colder regions.
Fresh or brackish water[
]. Ponds, lakes and slowly-moving rivers at elevations up to 2,700 metres in China[
]. Brackish or highly alkaline waters of ponds and lakes to 1,000 metres in America[
A plant of the tropical to temperate zones.
A submerged water plant, succeeding in shallow fresh or brackish water[
The plant has brittle stems that break easily, but can then produce roots and develop into a new plant[
]. It has spread to most areas of the world, where it forms dense mats that choke out other species. It is one of the few species of aquatic weeds capable of colonizing brackish waters (between fresh and salt water)[
This is one of the few genera of plants where fertilization takes place under the surface of the water[
Dioecious, male and female plants must be grown if seed is required[
Young plant - raw[
Seed - we have no information on this species but suggest sowing the seed in situ as soon as it is ripe if this is possible. Otherwise store the seed in water in a cool place and sow it in situ in the spring.
Division in the growing season[
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