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16-001014-02A (Ultimate SCMMP)
Attached to the e-mail Operational Works Application OPW16/0203 - 4 of 4.
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Common weeds species
Common weed species encountered in stormwater
treatment assets are shown in Table B-1.
Table B-1 Common weed species found in stormwater
treatment assets.
Weed species Common name Life form Where found* Status**
Hymenachne Olive Hymenachne Emergent SB, W, SW Class 2
amplexicaulis
Limnocharis flava Limnocharis Emergent SB, W
Sagittaria Sagittaria Emergent SB, W
platyphylla
Alternanthera Alligator Weed Emergent SB, W, SW Class 1
philoxeroides
Hygrophila Hygrophila Emergent SB, W Class 1
costata
Gymnocoronis Senegal tea Emergent SB, W Class 1
spilanthoides
Heteranthera Kidney leaf Emergent SB, W
reniformis
Ludwigia Peruvian primrose Emergent SB, W, B Class 1
peruviana
Typha Cumbungi Emergent W, SW
domingensis/
orientalis
Salvinia molesta Salvinia Floating SB, W Class 2
Eichhornia Water Hyacinth Floating SB, W Class 2
crassipes
Pistia stratoites Water Lettuce Floating SB, W Class 2
Nymphaea Yellow Water Lily Floating attached SB, W
mexicana
Nymphaea Cape blue waterlily Floating attached SB, W
caerulea
Urochloa mutica Para grass Semi-aquatic SB, W, SW
Myriophyllum Parrot’s feather Submerged SB, W
aquaticum
Cabomba Cabomba Submerged SB, W Class 2
caroliniana
Egeria densa Dense water weed Submerged SB, W
Elodea canadensis Elodea Submerged SB, W
Chloris gayana Rhodes grass Terrestrial SB, W, B, SW
Desmodium Silver Leaf Terrestrial BR, SW, B
uncinatum desmodium
Echinochloa Barnyard grass Terrestrial SB, W, B, SW
crus-galli
Ipomoea cairica Morning glory Terrestrial SB, W, B, SW
Panicum Guinea grass Terrestrial SB, W, B, SW
maximum
Maintaining Vegetated Stormwater Assets Version 1 59
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