Najadaceae

A. L. de Jussieu
Common names: Naiad Family or Water-nymph Family
Treatment appears in FNA Volume 22. Treatment on page 77.

Herbs, annual, rarely perennial, not rhizomatous, caulescent; turions absent. Leaves nearly opposite or appearing whorled, submersed, sessile; sheath not persisting longer than blade, not leaving scar when shed, not ligulate, not auriculate or rarely auriculate; intravaginal squamules scales, 2, linear. Inflorescences axillary, solitary flowers or cymes, often subtended by spathe as involucre, sessile or short-pedunculate. Flowers unisexual, staminate and pistillate on same or separate plants; subtending bracts absent; perianth absent; stamens 1; anthers dehiscing irregularly; pollen spheric; pistils 1, not stipitate; ovules basal, anatropous. Fruits achenelike. Seeds 1; embryo straight.

Discussion

Genus Genera 1, species 40 (8 species in the flora).

Lower Taxa

... more about "Najadaceae"
Robert R. Haynes +
A. L. de Jussieu +
Naiad Family +  and or Water-nymph Family +
short-pedunculate +  and sessile +
Nearly worldwide +
pistillate +, staminate +, short-pedunculate +  and sessile +
whorled +, appearing +  and opposite +
submersed +
not stipitate +
fehre1991a +, fehre1991b +, haynes1977a +  and thorne1993a +
auriculate +  and not auriculate +
not persisting +
Najadaceae +
caulescent +  and not rhizomatous +
perennial +  and annual +