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Sagittaria platyphylla

Sagittaria at Acton, ACT

Sagittaria platyphylla at Acton, ACT - 12 Apr 2022
Sagittaria platyphylla at Acton, ACT - 12 Apr 2022
Sagittaria platyphylla at Acton, ACT - 12 Apr 2022
Sagittaria platyphylla at Acton, ACT - 12 Apr 2022
Sagittaria platyphylla at Acton, ACT - 12 Apr 2022
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Identification history

Sagittaria platyphylla 18 Apr 2022 JaneR
Sagittaria platyphylla 12 Apr 2022 NedJohnston

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User's notes

Not sure about this one as I know there are a couple similar ones but hopefully not sagittaria. Each leaf was up to about 1 meter tall and the flowers had three white petals and were the same height as the leaves. I’m happy to return any time and take better photos as all I had was my iPhone from some distance.

4 comments

JaneR wrote:
   12 Apr 2022
Well spotted. It certainly looks like Sagittaria platyphylla, and it looks to be very well established in this urban wetland and may be in downstream places.
Close ups of flowers and fruits would be a help - is this possible at all ? or an observation. Sagittaria has numerous stamens, and flowers mostly uni-sexual: whereas Alisma (same family, very similar) has six stamens and flowers mostly bi-sexual.
NedJohnston wrote:
   13 Apr 2022
Hi Jane,
I'll return to the site today and try to get some close-up photos of the flowers and fruits. The first photo is of a small number next to Clunies Ross Street and the last photo is of many plants that were in the main pond just downstream. I couldn't see any further down from that but the creek feeds directly into Sullivan's creek so it may have already been established in that watercourse.
NedJohnston wrote:
   13 Apr 2022
@JaneR I took some pictures of the flowers and fruit so hopefully that helps. Sorry that they're still not great but the constant stream of European Wasps flying near the base dissuaded me from getting too close.
JaneR wrote:
   18 Apr 2022
this sounds like a problem area, with Sagittaria and European Wasps !

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Location information

Sighting information

Additional information

  • 30cm to 1 metre Plant height
  • True In flower

Species information

Record quality

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  • More than one media file
  • Verified by an expert moderator
  • Nearby sighting(s) of same species
  • GPS evidence of location
  • Description
  • Additional attributes
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