Lagarosiphon major (Ridl.) Moss ex V.A. Wager

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Lagarosiphon major

Photo: Mark Hyde
Garden of 12, Zimre Way, Mandara, Harare

Lagarosiphon major

Photo: Mark Hyde
Garden of 12, Zimre Way, Mandara, Harare

Lagarosiphon major

Photo: Mark Hyde
Garden of 12, Zimre Way, Mandara, Harare

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Synonyms: Elodea crispa hort.
Lagarosiphon muscoides Harv. var. major Ridl.
Common names: African elodea (English) Curly waterweed (English) Oxygen weed (English)
Status: Native
Stems thick, up to 3 mm in diameter; leaves 6.5-25 × 2-4.4 mm, alternate, occasionally whorled, spreading or recurved, thick, mostly opaque; apex usually obtuse. Epidermal cells mainly equal-sided; margins with 2 rows of sclerenchyma fibres, almost translucent, each side with 50-100 teeth; leaf teeth relatively short, blunt, pointing upwards and not borne on protuberances; central area narrow, without sclerenchyma fibres. Male inflorescence a spathe with c. 50 flower buds; spathe valves ovate; male perianth pinkish. Female inflorescence with ovate to narrowly ovate spathe valves; female flower with pinkish perianth. Capsule ovoid to narrowly ovoid, tapered above.
Derivation of specific name: major: larger, greater, bigger
Habitat: Dams and lakes
Altitude range: (metres) 900 - 2000 m
Flowering time:
Worldwide distribution: South Africa, where it is said to be native; elsewhere a troublesome weed, especially in Europe and New Zealand.
Zimbabwe distribution: 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: Wednesday 6 September 2017

Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 23.

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 91.

Symoens, J.J. (2009). Hydrocharitaceae Flora Zambesiaca 12(2) Pages 24 - 25.

Other sources of information about Lagarosiphon major:

Our websites:

Flora of Botswana: Lagarosiphon major

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Species information: Lagarosiphon major., retrieved 26 May 2024

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