1. Pontederiaceae Kunth

    1. This family is accepted.

[FTEA]

Pontederiaceae, B. Verdcourt. Flora of Tropical East Africa. 1968

Habit
Erect or floating aquatic herbs
Leaves
Leaves with floating and/or emersed blades, sheathing at the base
Flowers
Flowers hermaphrodite, regular or slightly irregularly two-lipped, arranged in racemes, spikes, panicles or sub-umbellate inflorescences subtended by a spathe-like leaf-sheath or solitary (Eichhornia)
Perianth
Perianth hypogynous, petaloid, divided into 6 lobes more or less arranged in two series, united at the base or free
Androecium
Stamens 1, 3, or 6, equal or unequal, inserted on the perianth; filaments free; anthers dithecous, opening by longitudinal slits or rarely by terminal pores
Gynoecium
Ovary superior, 3-locular with axile placentas or unilocular with 3 parietal placentas; style entire or lobed; ovules anatropous, numerous to solitary
Fruits
Fruit a capsule opening by 3 valves, or an indehiscent achene
Seeds
Seeds longitudinally ribbed, with copious endosperm
[FWTA]

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

Habit
Aquatic erect or floating herbs
Leaves
Leaves with floating or immersed blades sheathing at the base
Flowers
Flowers bisexual, actinomorphic, arranged in racemes or panicles subtended by a spathe-like leaf-sheath; bracts minute or absent
Perianth
Perianth hypogynous, corolline; lobes 6 or 4, sub-biseriate
Androecium
Stamens 6 or 3, rarely 1, inserted on the perianth, sometimes somewhat unequal in length or 1 the longest of all; filaments free; anthers 2-locular, opening lengthwise by slits or rarely by pores
Gynoecium
Ovules numerous to solitary and then pendulous Ovary superior, 3-locular, with axile placentas or 1-locular with 3 parietal placentas; style entire or shortly lobed
Fruits
Fruit a capsule opening by 3 valves, or indehiscent
Seeds
Seeds ribbed, with copious endosperm

Images

Pontederiaceae Kunth appears in other Kew resources:

First published in Nov. Gen. Sp. [H.B.K.] 1(3): 265(ed. qto.). 1816 [4-11 May 1816] (as "Pontedereae") (1816)

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 2019. 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