87.010 Egeria Planch.

Symoens, J.J. (2009) Hydrocharitaceae Flora Zambesiaca 12(2)

Description of the genus

Dioecious, submerged, freshwater, perennial herbs. Roots simple, adventitious, without root-hairs, arising from nodes. Stems elongate, stoloniferous or erect, terete, simple or branched from axils; subtended at the base by 2 sessile, opposite, scale-like leaves. All other leaves sessile, in whorls, linear to lanceolate, flaccid, somewhat translucent, with 1 apical spine; margins green or hyaline, serrulate to denticulate. Nodal scales 2–4 per leaf, ovoid to orbicular with entire margins. Flowers have a solitary spathe in leaf axils, sessile, narrowly ovoid, 2–5-flowered; sepals 3, ovate to suborbicular, obtuse or cucullate; petals 3, widely elliptic to orbicular, rounded, spreading. Ovary of 3 carpels, ovoid, 1-locular, placentation parietal. Fruit ovoid, smooth. Seeds ellipsoid, covered in elongated or spine-like cells.

Worldwide: Two species in South America.

Zimbabwe: 1 taxon.

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SpeciesFZ divisionsContent
densa Planch.N

Other sources of information about Egeria:

External websites:

African Plants: A Photo Guide (Senckenberg): Egeria
BHL (Biodiversity Heritage Library): Egeria
EOL (Encyclopedia of Life): Egeria
GBIF (Global Biodiversity Information Facility): Egeria
Google: Web - Images - Scholar
iNaturalist: Egeria
IPNI (International Plant Names Index): Egeria
JSTOR Plant Science: Egeria
Mansfeld World Database of Agricultural and Horticultural Crops: Egeria
Plants of the World Online: Egeria
Tropicos: Egeria
Wikipedia: Egeria

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-23

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2023). Flora of Zimbabwe: Genus page: Egeria.
https://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=108, retrieved 24 September 2023

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