 Aster Weed (*Aster subulatus) Erect. White petals scarcely protrude. Wetlands and streamsides.
Aster Weed (*Aster subulatus) Erect. White petals scarcely protrude. Wetlands and streamsides. Lesser Joyweed  (Alternanthera denticulata ) Wetlands and mud flats. Erect.
Lesser Joyweed  (Alternanthera denticulata ) Wetlands and mud flats. Erect. Hastate Orache  (Atriplex prostrata) Wetland. Erect or prostrate.
Hastate Orache  (Atriplex prostrata) Wetland. Erect or prostrate.  Pacific Azolla. (Azolla filiculoides) Floating fern with divided fronds. Still water.
Pacific Azolla. (Azolla filiculoides) Floating fern with divided fronds. Still water. Swamp Crassula (Crassula helmsii) Small wetland plant.
Swamp Crassula (Crassula helmsii) Small wetland plant. River Mint (Mentha australis Narrow green leaves.
River Mint (Mentha australis Narrow green leaves.  Swamp Isotome (Isotoma fluviatilis) Pale blue starry flowers. Swamp plant.
Swamp Isotome (Isotoma fluviatilis) Pale blue starry flowers. Swamp plant. Rushes (Juncus species) Small straw-coloured or brown flowers. Usually wetland plants.
Rushes (Juncus species) Small straw-coloured or brown flowers. Usually wetland plants. Duckweeds  Tiny (a few mm) floating plants on still water.
Duckweeds  Tiny (a few mm) floating plants on still water. Small Loosestrife (Lythrum hyssopifolia)  Herb. Small plant of damp places. Small  blue flowers.
Small Loosestrife (Lythrum hyssopifolia)  Herb. Small plant of damp places. Small  blue flowers. Purple Loosestrife (Lythrum salicaria)  Erect herb. Showy clusters of reddish-purple flowers.
Purple Loosestrife (Lythrum salicaria)  Erect herb. Showy clusters of reddish-purple flowers. Pennyroyal (*Mentha puleguim) Purplish flowers circle stems. Wet areas.
Pennyroyal (*Mentha puleguim) Purplish flowers circle stems. Wet areas.  Garden Mint (*Mentha spicata) Cylindrical terminal clusters of white flowers. Aromatic. Wet areas.
Garden Mint (*Mentha spicata) Cylindrical terminal clusters of white flowers. Aromatic. Wet areas.  Tangled Lignum (Duma florulenta ) Wiry almost leafless shrub Swamps.
Tangled Lignum (Duma florulenta ) Wiry almost leafless shrub Swamps. Parrot's Feather (*Myriophyllum aquaticum) Rings of bluish leaves. Leaflets narrow. Aquatic.
Parrot's Feather (*Myriophyllum aquaticum) Rings of bluish leaves. Leaflets narrow. Aquatic. Water Milfoils (Myriophyllum  species) Leaves in rings, green or red, sometimes with narrow leaflets. Aquatic.
Water Milfoils (Myriophyllum  species) Leaves in rings, green or red, sometimes with narrow leaflets. Aquatic. Watercress (*Nasturtium officinale) 4 white petals. Leaves in unequal leaflets. Wet areas.
Watercress (*Nasturtium officinale) 4 white petals. Leaves in unequal leaflets. Wet areas. Water Lily (*Nymphea) species.  Large pond lily.
Water Lily (*Nymphea) species.  Large pond lily. Pale Knotweed (Persicaria lapathifolia)  Open shrub to a metre or more. Wetlands.
Pale Knotweed (Persicaria lapathifolia)  Open shrub to a metre or more. Wetlands. Slender Knotweed (Persicaria decipiens)  Low (30-60cm)open shrub. Wetlands.
Slender Knotweed (Persicaria decipiens)  Low (30-60cm)open shrub. Wetlands. Creeping Knotweed (Persicaria prostrata)  Prostrate. Wetlands.
Creeping Knotweed (Persicaria prostrata)  Prostrate. Wetlands. Matted Starwort. (Stellaria caespitosa)  Cushion bush. Wet areas.
Matted Starwort. (Stellaria caespitosa)  Cushion bush. Wet areas. Eelweed (Vallisneria australis)  Submerged plant. Spiral stalks.
Eelweed (Vallisneria australis)  Submerged plant. Spiral stalks. Water Plantain (Alisma plantago-aquatica)  White 3-petalled flowers. Leaves plantain-like.
Water Plantain (Alisma plantago-aquatica)  White 3-petalled flowers. Leaves plantain-like.  Common Starwort (*Callitriche stagnalis)  Small paired oval leaves. Uncommon.
Common Starwort (*Callitriche stagnalis)  Small paired oval leaves. Uncommon. Starwort (*Callitriche brutia)  Small paired oval leaves and long linear leaves Uncommon.
Starwort (*Callitriche brutia)  Small paired oval leaves and long linear leaves Uncommon. Star Fruit (Damasonium minus)  Broad leaves on slender stalks. Fruit star-shaped. Uncommon.
Star Fruit (Damasonium minus)  Broad leaves on slender stalks. Fruit star-shaped. Uncommon. Pigweed (Dysphania glomulifera)  Plant of lake edges. Tiny flowers. Uncommon.
Pigweed (Dysphania glomulifera)  Plant of lake edges. Tiny flowers. Uncommon. Waterwort (Elatine gratioloides)  Water edge. Pinkish stems.
Waterwort (Elatine gratioloides)  Water edge. Pinkish stems. Canadian Pondweed (*Elodea canadensis)  Sumberged weed.
Canadian Pondweed (*Elodea canadensis)  Sumberged weed. Small Mud-mat (Glossostigma elatinoides)  Mat plant on banks.
Small Mud-mat (Glossostigma elatinoides)  Mat plant on banks. Austral Brooklime (Gratiola peruviana)  Blue tube flowers. Leaves in opposite pairs and toothed. Uncommon.
Austral Brooklime (Gratiola peruviana)  Blue tube flowers. Leaves in opposite pairs and toothed. Uncommon. Poison Pratia (Lobelia concolor)  Prostrate, rooting at nodes.
Poison Pratia (Lobelia concolor)  Prostrate, rooting at nodes. Creeping Monkey-flower (Mimulus repens)  Prostrate, small paired leaves.
Creeping Monkey-flower (Mimulus repens)  Prostrate, small paired leaves. Fairies Aprons (Utrichularia dichotoma) Swampy areas. Slender stalks. Localised.
Fairies Aprons (Utrichularia dichotoma) Swampy areas. Slender stalks. Localised. Water Blinks (Montia fontana) Swampy areas. Paired leaves. Uncommon
Water Blinks (Montia fontana) Swampy areas. Paired leaves. Uncommon Angled Lobelia (Lobelia anceps) Swampy areas. Flowers bilaterally symmetrical.
Angled Lobelia (Lobelia anceps) Swampy areas. Flowers bilaterally symmetrical. White Purslane (Neopaxia australasica) Swampy areas. Long narrow leaves.
White Purslane (Neopaxia australasica) Swampy areas. Long narrow leaves. Swamp Weed (Selliera radicans) Swampy areas. Flowers small, fan-shaped. Uncommon.
Swamp Weed (Selliera radicans) Swampy areas. Flowers small, fan-shaped. Uncommon. Curly Pond-weed (Potamogeton crispus) Submerged. Leaves narrow, stalkless, opposite, wavy.
Curly Pond-weed (Potamogeton crispus) Submerged. Leaves narrow, stalkless, opposite, wavy. Blunt Pond-weed (Potamogeton ochreatus) Submerged. Leaves narrow, flat, blunt.
Blunt Pond-weed (Potamogeton ochreatus) Submerged. Leaves narrow, flat, blunt. Floating Pond-weed (Potamogeton tricarinatus) Oval leaves float on surface.
Floating Pond-weed (Potamogeton tricarinatus) Oval leaves float on surface. Streaked Arrow-grass (Triglochin striata)  Slender erect leaves and stems. Uncommon.
Streaked Arrow-grass (Triglochin striata)  Slender erect leaves and stems. Uncommon. Swamp Starwort (*Stellaria angustifolia)  Narrow paired leaves. Uncommon.
Swamp Starwort (*Stellaria angustifolia)  Narrow paired leaves. Uncommon. Old Man Weed (Centipeda cunninghamii) Wetland plant with button daisy flowers at leaf bases.
Old Man Weed (Centipeda cunninghamii) Wetland plant with button daisy flowers at leaf bases.