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Cynanchum viminale subsp. australe

Caustic Shrub, Caustic Vine at Silverton, NSW

Cynanchum viminale subsp. australe at Silverton, NSW - 28 Dec 2022
Cynanchum viminale subsp. australe at Silverton, NSW - 28 Dec 2022
Cynanchum viminale subsp. australe at Silverton, NSW - 28 Dec 2022
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Identification history

Cynanchum viminale subsp. australe 2 Feb 2023 Tapirlord
Cynanchum viminale subsp. australe 10 Jan 2023 Darcy
Unidentified 28 Dec 2022 Darcy

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User's notes

A strange, leafless, spindly plant. Growing up through a shrub, it reminds me almost of lignum.


Tapirlord wrote:
   8 Jan 2023
Darcy wrote:
   9 Jan 2023
Don't think so? Doesn't seem to be Choretrum or Leptomeria, doesn't seem to be any recorded nearby (though records seem patchy out this way), and nearest recorded C. & L. species all seem to have a lot of ridges, whereas the stalks on this were very smooth. I think this is somewhat related, as I suspect that the plant was somewhat parisitic.
Darcy wrote:
   9 Jan 2023
Perhaps Caustic Vine (Cynanchum viminale subsp. australe) ?

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Location information

Species information

  • Cynanchum viminale subsp. australe Scientific name
  • Caustic Shrub, Caustic Vine Common name
  • Not Sensitive
  • Local Native
  • Non-Invasive

Sighting information

  • 1 Abundance
  • 28 Dec 2022 08:30 AM Recorded on
  • Darcy Recorded by

Additional information

  • 1 metre to 5 metres Plant height
  • True In flower

Record quality

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