Eichhornia crassipes (Mart.) Solms

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Eichhornia crassipes

Photo: Mark Hyde
Mutoko CL

Eichhornia crassipes

Photo: Mark Hyde
Mutoko CL

Eichhornia crassipes

Photo: Mark Hyde
Mutoko CL

Eichhornia crassipes

Photo: Bart Wursten
Mana Pools

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Synonyms: Pontederia crassipes Mart.
Common names: Water hyacinth (English)
Frequency: Frequent, sometimes locally very abundant.
Status: Introduced
Description:
Herb, usually free-floating but occasionally rooted in mud, 4-40 cm. Leaves 4-8, clustered on short rhizomes, erect, very variable; in free-floating plants: petiole 5-10 cm, markedly swollen below; lamina 4-9 cm wide, ovate to circular; in older plants rooted in mud, the petiole is longer and not swollen. Inflorescence a c.8-flowered showy spike, raised above leaves. Perianth tube 20 mm, curved; limb 5-7 cm in diameter, slightly 2-lipped, pale mauve with the central lobe broadest with large blue area and central yellow spot.
Notes: A serious invader, rapidly colonizing and blocking waterways through extensive vegetative reproduction by means of floating stolons.
Derivation of specific name: crassipes: thick-footed or thick-stalked.
Habitat: Most often free-floating on the surface of dams and ponds, sometimes rooted in mud.
Altitude range: (metres)
Flowering time:
Worldwide distribution: Tropical and subtropical America and widely naturalised throughout the tropics.
Zimbabwe distribution: N,W,C,S
Growth form(s): Aquatic.
Endemic status:
Red data list status:
Insects associated with this species: Neochetina eichhorniae (Food plant)
Spot characters: Display spot characters for this species
Literature:

Baumann, G. (2005). Photographic Guide to Wildflowers of Malawi Wildlife and Environmental Society of Malawi Pages 238 - 239. (Includes a picture).

Catarino, L. & Martins, E.S. (1996). The Pontederiaceae of the Flora Zambesiaca Area Kirkia 16(1) Pages 23 - 24.

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 162.

Henderson, L. (2001). Alien weeds and invasive plants Plant Protection Research Institute Handbook No. 12. Plant Protection Research Institute, Agricultural Research Council, S Africa. Page 21. (Includes a picture).

Henderson, L. & Cilliers, C.J. (2002). Invasive Aquatic Plants Plant Protection Research Institute Handbook No. 16. Plant Protection Research Institute, Agricultural Research Council, S Africa. Pages 10 - 15. (Includes a picture).

Pickering, H. & Roe, E. (2009). Wild Flowers of the Victoria Falls Area Helen Pickering, London Page 99. (Includes a picture).

Pooley, E. (1998). A Field Guide to the Wild Flowers of KwaZulu-Natal and the Eastern Region. Natal Flora Publications Trust. Durban. Pages 448 - 449. (Includes a picture).


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Other sources of information about Eichhornia crassipes:

Our websites:

Flora of Mozambique: Eichhornia crassipes
Flora of Zambia: Eichhornia crassipes

External websites:

African Plant Database: Eichhornia crassipes
Biodiversity Explorer (Biodiversity of southern Africa): Eichhornia crassipes
EOL (Encyclopedia of Life): Eichhornia crassipes
ePIC (electronic Plant Information Center): Eichhornia crassipes
Flora Zambesiaca web site: Eichhornia crassipes
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Eichhornia crassipes
IPNI (International Plant Names Index): Eichhornia crassipes
Ispot Southern Africa : Eichhornia crassipes
JSTOR Plant Science: Eichhornia crassipes
Kew Herbarium catalogue: Eichhornia crassipes
Kew Monocotyledon checklist: Eichhornia crassipes
Tropicos: Eichhornia crassipes
West African Plants database: Eichhornia crassipes


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-14

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2014). Flora of Zimbabwe: Species information: Eichhornia crassipes.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=112960, retrieved 20 October 2014

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