Potamogeton nodosus Poir.

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Potamogeton nodosus

Photo: Bart Wursten
Small dam in forest off the Woodland Rd, Vumba

Potamogeton nodosus

Photo: Bart Wursten
Small dam in forest off the Woodland Rd, Vumba

Potamogeton nodosus

Photo: Bart Wursten
Small dam in forest off the Woodland Rd, Vumba

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

Synonyms: Potamogeton fluitans sensu auct.
Common names: Broad-leaved pondweed (English)
Status: Native
Herb, with stems to 1 m, arising from a woody rhizome. Stipules variable in size (up to 6 cm), open, convolute, membranous, lower amplexicaul, upper spreading, ovate, acuminate. Upper leaves floating and sometimes aerial on mud, submerged ones often soon decaying; all leaves petiolate. Submerged leaves: 8-20 × 0.8-1.6 cm, linear to linear-lanceolate, thin, tapering to apex; floating leaves: 5(-8) × 2.5(-3.5) cm, elliptic to ovate, coriaceous; apex rounded to acute; leaves intermediate between the two forms occur. Leaves of land forms usually smaller. Spikes on ± swollen, arcuate scapes, many-flowered. Drupe c.4 mm, rounded, flattened; beak short.
Notes: In FZ, plants formerly known as P. thunbergii are treated as either P. nodosus and P. richardii.

Our images from the Vumba have been provisionally placed under P. nodosus but further work is needed to establish if this is correct.
Derivation of specific name:
Habitat: In ponds and dams, usually floating, occasionally emergent on mudbanks.
Altitude range: (metres)
Flowering time:Sep - Apr
Worldwide distribution: Widespread in Africa, Madagascar, Indian Ocean islands, Europe, Asia, and North and Central America.
Zimbabwe distribution: N,W,C,E
Growth form(s): Aquatic.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images last updated: Saturday 14 April 2007

Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 191. (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 502 - 503. (Includes a picture).

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 148. as Potamogeton thunbergii

Symoens, J.J. (2009). Potamogetonaceae Flora Zambesiaca 12(2) Pages 89 - 90.

Timberlake, J.R. & Childes, S.L. (2004). Biodiversity of the Four Corners Area: Technical Reviews Volume Two (Chapter 5-15) Appendix 5-1: Plant Checklist Occasional Publications in Biodiversity 15 Page 193. as Potamogeton thunbergii


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Other sources of information about Potamogeton nodosus:

Our websites:

Flora of Botswana: Potamogeton nodosus
Flora of Caprivi: Potamogeton nodosus
Flora of Zambia: Potamogeton nodosus

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-16

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2016). Flora of Zimbabwe: Species information: Potamogeton nodosus.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=103100, retrieved 29 May 2016

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