NAJADACEAE
NB Synonym of Hydrocharitaceae. Used to be a separate family with only one genus Najas
Morphological description
Slender, submerged herbs.
Leaves
Leaves simple, linear, whorled, sheathing, spiny dentate.
Inflorescence
Plants usually monoecious, flowers solitary.
Flowers
Flower: male flower with 1 anther enclosed in a tubular perianth, female flower naked, ovary superior with one basal ovule.
Fruit
Fruit.
Seed
Seed.
Different from: Ceratophyllaceae: leaves dissected, not sheathing. - Potamogetonaceae: flowers usually in spikes, bisexual, ovule apical or parietal.
Distribution: The only genus of the family, Najas, is widespread; in Malesia 8 species.
Notes: note.
Literature: . J.J.O de Wilde, Fl. Males. I, 6 (1962) 157-171; L. Triest, Ac. R. Sc.
Spot characters (Van Balgooy): Najas 46.
Illustrations: Fig. 120. Najas tenuifolia R. Br. subsp. pseudograminea (Koch) W.J. de Wilde var. pseudograminea (Najadaceae). Habit, arrows pointing to one open and two closed male flowers, respectively. Reproduced from Flora Malesiana I, 6 (1962)
Image in PhytoImages for Hydrocharitaceae