Zannichelliaceae

Dumortier
Common names: Horned- pondweed Family
Found in FNA Volume 22. Treatment on page 84.
Herbs, annual [perennial], not rhizomatous, caulescent; turions absent. Leaves alternate, opposite, or pseudowhorled, often all on same plant, submersed, sessile; sheath not persisting longer than blade, not leaving circular scar when shed, ligulate, not auriculate; blade linear; intravaginal squamules scales, 2. Inflorescences axillary, cymes, without subtending spathe, sessile. Flowers uniasexual, staminate and pistillate flowers on same plant; subtending bracts absent; perianth absent. Staminate flowers: stamens 1; anther dehiscing longitudinally; pollen globose. Pistillate flowers: pistils (1–)4–5(–8), distinct, short-stipitate; ovules pendulous, anatropous. Fruits drupaceous. Seeds 1; embryo curved.

Distribution

Nearly worldwide.

Discussion

Genera 4, species 10–12 (1 genus, 1 species in the flora).

Facts about "Zannichelliaceae"
AuthorRobert R. Haynes + and C. Barre Hellquist +
Common nameHorned- pondweed Family +
Referencecampbell1897a +, haynes1987a +, posluszny1977a +, taylor1909a + and tomlinson1976a +
Taxon nameZannichelliaceae +
Taxon rankfamily +
VolumeVolume 22 +