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Declared weeds and invader plants in South Africa
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Aquatic plants that are declared weeds or invaders in South
Africa
Note: This section of Biodiversity Explorer on weeds and invaders is out-of-date, as the information has been superceded by more recent legislation and lists that fall under the National Environmental Management: Biodiversity (NEMBA) Act. These documents can be downloaded here.
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 |
 |
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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