Potamogeton octandrus Poir.

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Common names:
Status: Native
Herb, 20-100 cm high, from a creeping rhizome. Stipular sheaths small, convolute, soon decaying. Leaves dimorphic: submerged leaves 30-70 × 1-3 mm, linear to narrowly linear-lanceolate, alternate, translucent; apex acute or acuminate; the area between midrib and lateral nerves consisting of lacunar tissue; floating leaves up to 20 × 5 mm, lanceolate to oblong-lanceolate, with a petiole 1 cm, opposite, just below the flower spikes, not translucent, apple-green. Spikes longer than leaves; flowers usually 2 per whorl, with 3-7 whorls per spike. Drupe 2 mm, rounded to oblong in outline, tapering to base; beak relatively long, upturned.
Type location:
Derivation of specific name:
Altitude range:
Flowering time:
Worldwide distribution: Widespread in tropical Africa, Gauteng and KwaZulu-Natal, South Africa, Madagascar, South and East Asia, New Guinea and Australia.
Zambian distribution (Flora Zambesiaca): B,N,W,C,S
Zambian distribution (Provinces): Cb,Lp,C,S,W
Growth form(s): Aquatic.
Endemic status:
Red data list status:
Insects associated with this species:
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Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 112.

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

Symoens, J.J. (2009). Potamogetonaceae Flora Zambesiaca 12(2) Pages 86 - 87.

Other sources of information about Potamogeton octandrus:

Our websites:

Flora of Botswana: Potamogeton octandrus
Flora of Caprivi: Potamogeton octandrus
Flora of Caprivi: cultivated Potamogeton octandrus
Flora of Malawi: Potamogeton octandrus
Flora of Mozambique: Potamogeton octandrus
Flora of Zimbabwe: Potamogeton octandrus

External websites:

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

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-24

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2024). Flora of Zambia: Species information: Potamogeton octandrus.
https://www.zambiaflora.com/speciesdata/species.php?species_id=103070, retrieved 25 June 2024

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