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  • Aponogetonaceae Planch.

This family is accepted.
Aponogeton sp (Aponogetonaceae)

[FSOM]

M. Thulin et al. Flora of Somalia Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Perennial glabrous freshwater herbs from starch-rich rhizome or tuber.
Morphology Leaves
Leaves basal, simple, usually long-petiolate
Morphology Reproductive morphology Inflorescences
Inflorescence usually a simple or 2-branched spike, at first enclosed in a thin spathe.
Morphology Reproductive morphology Flowers
Flowers bisexual or more rarely unisexual, usually irregular.
Morphology Reproductive morphology Flowers Tepal
Tepals 1–6 or absent, petal-like, free.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens usually 6, free; filaments narrow; anthers 2-thecous, longitudinally dehiscent.
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpels superior, usually 3–6, free or slightly united at the base, 1-celled; ovules 1–14; style short.
Morphology Reproductive morphology Fruits
Fruit a 1–several-seeded follicle. Seeds with a straight embryo, without endosperm.
Distribution
Family of a single genus only, found in tropical and subtropical parts of the Old World.

[FWTA]

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

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

[FTEA]

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

Morphology General Habit
Rhizomatous glabrous monoecious or rarely dioecious herbs with tubers, usually growing submerged in fresh water or (after drying up) on wet soil
Morphology Leaves
Leaves all basal and alternate, simple and usually with long petioles; blades oblong to linear
Morphology Reproductive morphology 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
Morphology Reproductive morphology Flowers
Flowers bisexual or more rarely unisexual
Morphology Reproductive morphology Flowers Perianth
Tepals 1–6 or absent, petal-like, often persisting in fruit
Morphology Reproductive morphology Flowers Androecium
Stamens 1–6, rarely more; filaments free, filiform or flattened; anthers extrorse, 2-thecous, most often only 0.2–0.5 mm. long
Morphology Reproductive morphology Flowers 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
Morphology Reproductive morphology Fruits
Fruit a 1–14-seeded follicle
Morphology Reproductive morphology Seeds
Seeds discoidal to fusiform, straight or slightly curved, with a simple or double testa; endosperm absent

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

Literature

Flora of Somalia

  • Flora Somalia, Vol 4, (1995) Author: by M. Thulin [updated by M. Thulin 2008]

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

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 2021. 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