Plants
Other Fresh Water Plants

Other Fresh Water Plants

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These are plants that grow in fresh water, such as in rivers, lakes and swamps. But this category excludes Rushes & Sedges, Lilies & Irises, Daisies and Ferns which have their own categories.

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Other Fresh Water Plants

Featured sightings

Latest sightings

Myriophyllum verrucosum (Red Water-milfoil) at Oaks Estate, ACT by JaneR
Gratiola nana at Cotter River, ACT by NedJohnston
Crassula helmsii (Swamp Stonecrop) at Braidwood, NSW by JaneR
Rorippa nasturtium-aquaticum (Watercress) at Braidwood, NSW by JaneR
Gratiola peruviana (Australian Brooklime) at Yass River, NSW by SenexRugosus
Lythrum salicaria (Purple Loosestrife) at Rendezvous Creek, ACT by Philip
Gratiola peruviana (Australian Brooklime) at Uriarra Village, ACT by rangerstacey
Lythrum salicaria (Purple Loosestrife) at Jinden, NSW by JaneR
Ludwigia palustris (Marsh Purslane) at Strathnairn, ACT by Untidy
Ottelia ovalifolia subsp. ovalifolia (Swamp Lily) at Sutton, NSW by Untidy
Myriophyllum crispatum (Water Millfoil) at Sutton, NSW by Untidy
Veronica anagallis-aquatica (Blue Water Speedwell) at Fyshwick, ACT by ConBoekel
Callitriche sp. at Yaouk, NSW by AlisonMilton
Callitriche stagnalis (Common Starwort) at Yaouk, NSW by AlisonMilton
Myosotis laxa subsp. caespitosa (Water Forget-me-not) at Yaouk, NSW by AlisonMilton
Lythrum salicaria (Purple Loosestrife) at Rendezvous Creek, ACT by VanceLawrence
Crassula helmsii (Swamp Stonecrop) at Mount Fairy, NSW by JaneR
Ottelia ovalifolia subsp. ovalifolia (Swamp Lily) at Lerida, NSW by trevorpreston
Lythrum hyssopifolia (Small Loosestrife) at Lerida, NSW by trevorpreston
Ludwigia peploides subsp. montevidensis (Water Primrose) at Acton, ACT by WalterEgo
Crassula helmsii (Swamp Stonecrop) at Wollogorang, NSW by trevorpreston
Nymphoides montana (Marshwort) at Braidwood, NSW by JaneR
Callitriche stagnalis (Common Starwort) at Jembaicumbene, NSW by JaneR
Limosella australis (Austral Mudwort) at Jembaicumbene, NSW by JaneR
Elatine gratioloides (Waterwort) at Jembaicumbene, NSW by JaneR
Lythrum salicaria (Purple Loosestrife) at Jembaicumbene, NSW by JaneR
Myosotis laxa subsp. caespitosa (Water Forget-me-not) at Jembaicumbene, NSW by JaneR
Crassula helmsii (Swamp Stonecrop) at Jembaicumbene, NSW by JaneR
Lythrum hyssopifolia (Small Loosestrife) at Jembaicumbene, NSW by JaneR
Rorippa nasturtium-aquaticum (Watercress) at Jembaicumbene, NSW by JaneR
Veronica anagallis-aquatica (Blue Water Speedwell) at Jembaicumbene, NSW by JaneR
Limosella australis (Austral Mudwort) at Braidwood, NSW by JaneR
Crassula helmsii (Swamp Stonecrop) at Braidwood, NSW by JaneR
Cycnogeton multifructum (Water Ribbons) at Boorowa, NSW by JaneR
Potamogeton crispus (Curly Pondweed) at Boorowa, NSW by JaneR
Alternanthera philoxeroides (Alligator Weed) at Melba, ACT by pinnaCLE
Rorippa nasturtium-aquaticum (Watercress) at Uriarra Village, ACT by BethanyDunne
Cycnogeton procerum (Nareli, Swamp Arrowgrass) at Bendoura, NSW by RobG1
Nymphoides montana (Marshwort) at Bendoura, NSW by RobG1
Nymphoides sp. (A Marshwort) at Cotter River, ACT by nathkay
Lythrum salicaria (Purple Loosestrife) at Kambah, ACT by HelenCross
Lythrum hyssopifolia (Small Loosestrife) at Bannister, NSW by JaneR
Veronica anagallis-aquatica (Blue Water Speedwell) at Binda, NSW by JaneR

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Discussion

JaneR wrote:
22 Jan 2025
leaves don't look right shape, colour or configuration for Callitriche.
Callitriche sp.
Untidy wrote:
21 Jan 2025
I'm learning a lot today, Jane. Like not to be such a bird brain and focus on the water plants too. I'll take a walk out there again. If the river is low, there is a good chance we'll see it. Thank you.
Ludwigia palustris
JaneR wrote:
21 Jan 2025
A challenge ! Actually a few water plants turn reddish when stressed or stranded, not just Myriophyllum verrucosum. Leaf shape is hard to determine in these photos but it seems to be flattish, rather than the finely-dissected leaves of Myriophyllum verrucosum. This means it is most likely to be Ludwigia palustris: and especially because the habitat is just right (benthic muds of large river). See other sightings: 4508225, 4508178 etc.
With so little to ID, I'm uncomfortable verifying this, but am accepting it on the basis of habitat where found, and because effectively no other species likely to look like this or occur here.
Ludwigia palustris
Untidy wrote:
21 Jan 2025
Thank you. That's very helpful.
Myriophyllum crispatum
JaneR wrote:
21 Jan 2025
the third photo was indeed helpful: gave an idea of likely whorl number, and showed overall shape. This species of milfoil has (nearly always) tight crimped hairs on the stem. If wading in is not possible, its worth checking the strandline for milfoil debris (waterfowl can be quite destructive) - these isn't good for photo portraits but can be useful source of species details.
Extra photos are really helpful
Myriophyllum crispatum

Significant sightings

Recent activity

Gratiola nana at Cotter River, ACT

Myriophyllum verrucosum at Oaks Estate, ACT

Gratiola nana at Cotter River, ACT

Crassula helmsii at Braidwood, NSW

Rorippa nasturtium-aquaticum at Braidwood, NSW

Gratiola peruviana at Yass River, NSW

Gratiola peruviana at Yass River, NSW

Lythrum salicaria at Rendezvous Creek, ACT

Lythrum salicaria at Rendezvous Creek, ACT

Gratiola peruviana at Uriarra Village, ACT

Species Richness Score (SRS)

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1,909,052 sightings of 21,430 species from 13,229 contributors
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