German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

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Yellow water lily

Nuphar lutea

Common name:

Yellow water lily

Scientific name:

Nuphar lutea

Alternative common names:

Spatter dock, cow lily, brandy bottle (English)

This aquatic plant prefers shallow water up to 5m deep. It produces solitary yellow flowers protruding on a stalk above the water, 2-4cm in diameter with 5 or 6 large yellow sepals and many small yellow petals. Flowers during summer and have an alcoholic scent which attracts flies – hence its alternative name of brandy bottle.

Additional Info

  • Where does this species come from?

    Indigenous to temperate regions of Europe, north-west Africa and western Asia.

    What is its invasive status in South Africa?

    NEMBA Category 1a.

    Where in South Africa is it a problem?

    Not yet naturalised in South Africa but known to be invasive elsewhere.

    How does it spread?

    Seed dispersal.

    Why is it a problem?

    This plant has broad flat leaves which float on the surface and therefore block out sunlight to aquatic indigenous plants. They compete against indigenous species for the same resources.

    What does it look like?

    Leaves:Large, rounded flat leaves which float on the water surface. Yellow-green to lemon green in colour. Flowers: Solitary yellow flower protruding on a stalk above the water, 2-4cm in diameter with 5 or 6 large yellow sepals and many small yellow petals. Flowers during summer and have an alcoholic scent which attracts flies – hence its alternative name of brandy bottle. Fruit/seeds: Green, bottle-shaped fruit.

    Does the plant have any uses?

    Planted as a garden pond ornamental.

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General News Updates

2019 National Symposium on Biological Invasio…

26-02-2019

This is your invitation to South Africa's 2019 National Symposium on Biological Invasions. The convention is hosted by the Centre for Invasion Biology (CIB), University of Stellenbosch, and the Biolo... Read more

2019 Invasive Species Training

22-01-2019

During the past five years (2014-2018), ISSA invasive species trainers have trained 4 000 in the identification of invasive species and laws pertaining to invasive species across South Africa.  ... Read more

Alien Grass Working Group

04-09-2018

Who are we? The South African National Alien Grass Working Group was jointly initiated by the South African Biodiversity Institute (SANBI) and the Centre for Excellence in Invasion Biology (C·I·B) in... Read more

Permits for planting indigenous Cynodon?

01-03-2018

On 16 February, 2018, South Africa's Department of Environmental Affairs issued amendments to the regulations and lists relating to the National List of Invasive Species.  Updates to the draft&n... Read more

Invasive species training 2018 dates released

28-02-2018

Interested in invasive species?  How much do you know about NEMBA invasive species compliance for landowners and organs of state? The South African Green Industries Council (SAGIC) have released... Read more

Communications post for Africa advertised

25-01-2018

The Nature Conservancy has advertised a brand new post:  Communications Manager, Africa Region. Knowledge of invasive species and water would be an asset in this post. See details below:    Job Titl... Read more