1. Aponogetonaceae Planch.

    1. This family is accepted.

[FWTA]

Aponogetonaceae, F.N. Hepper. Flora of West Tropical Africa 3:1. 1968

Habit
Fresh-water aquatic herbs with submerged or floating leaves; rhizome tuberous, with fibrous roots
Leaves
Leaves long-petiolate, or sessile, oblong-elliptic to linear, with few principal parallel nerves and numerous transverse secondary nerves
Flowers
Flowers hermaphrodite or rarely unisexual, spicate-scapose, spike simple or usually 2- (rarely up to 8-) forked, without bracts
Perianth
Perianth-segments 1-3, or absent, sometimes petaloid and bract-like, equal or unequal, usually persistent
Androecium
Stamens 6 or more, free, hypogynous, persistent; anthers extrorse, 2-locular
Gynoecium
Carpels free, 3-6, sessile; style short; ovules 2 or more, ascending
Fruits
Fruits opening on the adaxial side
Seeds
Seeds without endosperm
[FTEA]

Aponogetonaceae, K.A. Lye (Agricultural University of Norway). Flora of Tropical East Africa. 1989

Habit
Rhizomatous glabrous monoecious or rarely dioecious herbs with tubers, usually growing submerged in fresh water or (after drying up) on wet soil
Leaves
Leaves all basal and alternate, simple and usually with long petioles; blades oblong to linear
Inflorescences
Inflorescence usually a simple or bifid spike (rarely the spike digitate and divided into 3–4 parts), at first enclosed in a thin caducous spathe, very rarely (in the South African species A. ranunculiflorus) the inflorescence is much abbreviated simulating a >i>Ranunculus flower
Flowers
Flowers bisexual or more rarely unisexual
Perianth
Tepals 1–6 or absent, petal-like, often persisting in fruit
Androecium
Stamens 1–6, rarely more; filaments free, filiform or flattened; anthers extrorse, 2-thecous, most often only 0.2–0.5 mm. long
Gynoecium
Ovaries 3–8, free or slightly united near their base; each ovary superior and 1-locular, with 1–14 erect ovules borne along one side of the locule-wall or at the base of the locule
Fruits
Fruit a 1–14-seeded follicle
Seeds
Seeds discoidal to fusiform, straight or slightly curved, with a simple or double testa; endosperm absent

Images

Aponogetonaceae Planch. appears in other Kew resources:

First published in Bot. Mag. 82: ad. t. 4894. 1856 [1 Jan 1856] (1856)

Accepted by

  • APG IV (2016) http://dx.doi.org/10.1111/boj.12385

Sources

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0