1. Butomaceae Mirb.

    1. This family is accepted.

[FTEA]

Butomaceae, Susan Carter. Flora of Tropical East Africa. 1960

Habit
Perennial or annual, aquatic, swamp or marsh herbs, glabrous, usually lactiferous
Rhizomes
Rhizome short; roots short, fibrous
Leaves
Leaves erect or floating, basal; petiole with a sheathing base; leaf-blade entire, iridaceous, or lanceolate to orbicular with cuneate to truncate base and acute to rounded apex
Inflorescences
Inflorescence umbellate, rarely with solitary flowers; bracts 2 or 3; bracteoles several; flowers regular, bisexual
Calyx
Sepals 3, persistent
Corolla
Petals 3, delicate
Androecium
Stamens 6–9–?; filaments flattened; anthers 2-celled, dehiscing longitudinally and laterally
Gynoecium
Carpels superior, free or joined at the base, 6–?, in a whorl, unilocular; style terminal; stigma sessile; ovules ?, scattered over the ovary-wall on a reticulate placenta
Fruits
Fruiting carpels finally dehiscing along the ventral suture; seeds ?, smooth, wrinkled or ridged, rarely slightly spiny, without endosperm; embryo horseshoe-shaped or straight
Distribution
A small family, confined to the tropics or subtropics except for Butomus L. which extends across Europe and Asia. The following genus is the only one which occurs in Africa
[FWTA]

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

Habit
Perennial, aquatic or swamp rhizomatous herbs, usually with milky juice
Leaves
Leaves ensiform to orbicular
Flowers
Flowers solitary or umbellate
Perianth
Perianth 2-seriate, the outer 3 usually sepal-like, imbricate, the inner 3 petal-like and usually thin and deciduous
Androecium
Stamens hypogynous, 8-9 or numerous; anthers basifixed, opening laterally
Gynoecium
Carpels free; ovules numerous, scattered, on the reticulately branched parietal placentas
Fruits
Fruits opening by the adaxial suture
Seeds
Seeds numerous, without endosperm

Images

Butomaceae Mirb. appears in other Kew resources:

First published in Hist. Nat. Pl. 8: 194. 1804 (1804)

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