Subordinate Taxa
Scientific Name:
Ceratophyllaceae Gray

Rootless, monoecious, submerged aquatic herbs, anchored by specialised branchlets.  Stems long, slender, branched.  Lvs in whorls of 3–10, dichotomously forked 1–4 times;  segments denticulate, bristle-tipped.  Fls small, solitary in lf axils.  Perianth a single whorl of 8–12 linear segments. Stamens numerous;  anthers sessile or subsessile, extrorse.  Ovary superior, of 1 carpel with 1 pendulous ovule.  Fr. a 1-seeded nut, often with 1–2 spines present at base;  style persistent, spinous.

[From:  Webb et al. (1988) Flora of New Zealand. Volume 4.]

Number of species in New Zealand within Ceratophyllaceae Gray
Exotic: Fully Naturalised1
Cronquist, A. 1988: The evolution and classification of flowering plants. The New York Botanic Gardens, New York.
Mabberley, D.J. 2008: Mabberley's plant book, a portable dictionary of plants, their classification and uses. Edition 3. Cambridge University Press.