Callitriche umbonata

4 Winged Water-starwort at Cavan, NSW

Callitriche umbonata at Cavan, NSW - 17 Aug 2023
Callitriche umbonata at Cavan, NSW - 17 Aug 2023
Callitriche umbonata at Cavan, NSW - 17 Aug 2023
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Identification history

Callitriche umbonata 5 Jan 2024 JaneR
Callitriche stagnalis 17 Aug 2023 JaneR
Callitriche stagnalis 17 Aug 2023 JaneR

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Significant sighting

JaneR noted:

5 Jan 2024

This species is very rarely recorded. Possibly overlooked because surface leaves are so similar to introduced species Callitriche stagnalis but, as shown in this photo, the submerged leaves are quite distinctive. At time of writing, there are only 10 herbarium sightings in New South Wales (a bit more frequent in Victoria).

User's notes

Photo shows linear submerged leaves (not often seen)

2 comments

JaneR wrote:
   5 Jan 2024
Re-identified as Callitriche umbonata (a rare native plant) based on having dimorphic leaves; submerged leaves being linear, with notched apex (the only Callitriche with such submerged leaves).
JaneR wrote:
   5 Jan 2024
Just to clarify: it is not officially 'rare' (or other such status) but it is very rarely observed.

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Location information

Sighting information

  • 101 - 1,000 Abundance
  • 17 Aug 2023 12:37 PM Recorded on
  • JaneR Recorded by

Additional information

  • Less than 10cm Plant height

Species information

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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