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Declared weeds and invader plants in South Africa >

Aquatic plants that are declared weeds or invaders in South Africa

There are 10 species of aquatic plants that are declared weeds or invaders in South Africa.

Species Type Cate-gory  

Azolla filiculoides (Azolla, Red water fern, Rooiwatervaring)

Classification: Monilophyta (ferns) > Polypodiales (leptosporangiate ferns)

Weed 1  

Salvinia molesta and other species of the Family Salviniaceae (Kariba weed, Watervaring)

Classification: Monilophyta (ferns) > Polypodiales (leptosporangiate ferns)

Weed 1  

Egeria densa (Dense water weed, Waterpes)

[= Elodea densa]

Classification: Hydrocharitaceae

Weed 1 Egeria densa

Eichhornia crassipes (Water hyacinth, Waterhiasint)

Classification: Pontederiaceae

Weed 1

Elodea canadensis (Canadian water weed, Kanadese waterpes)

Classification: Hydrocharitaceae

Weed 1  

Myriophyllum aquaticum (Parrot’s feather, Waterduisendblaar)

Classification: Haloragaceae

Weed 1  

Myriophyllum spicatum (Spiked water-milfoil)

Classification: Haloragaceae

Weed 1  

Pistia stratiotes (Water lettuce, Waterslaai)

Classification: Araceae

Weed 1  

Pontederia cordata (Pickerel weed, Jongsnoekkruid)

Classification: Pontederiaceae

Invader 3  

Rorippa nasturtium-aquaticum (Watercress, Bronkors)

[= Nasturtium officinale]

Classification: Brassicaceae

Invader 2  
 

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