Subordinate Taxa
Scientific Name:
Aponogetonaceae Planch.

Aquatic, scapose, perennial herbs, with globose tubers. Leaves floating or erect, usually long-petioled. Inflorescence of 1–2–(5) spikes, often enclosed at first in a caducous sheath. Flowers bisexual, rarely unisexual; segments 3–1 or 0, petaloid or bract-like, usually persistent. Stamens 5–18, free, hypogynous; filaments usually flattened; anthers 2-celled, dehiscing by longitudinal slits. Carpels 2–6, free, superior, sessile. Ovules 2 or more, basal. Fruit of 3–(8) hardened follicles. Seeds 4–8, oblong or cylindric.

[From:  Healy and Edgar (1980) Flora of New Zealand. Volume 3.]

Number of species in New Zealand within Aponogetonaceae Planch.
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.