Plants
Rushes, Sedges & Mat Rushes
Sighting 4481954

Juncus alexandri subsp. alexandri

Namadgi National Park

Juncus alexandri subsp. alexandri at Namadgi National Park - 6 Apr 2023 01:20 PM
Juncus alexandri subsp. alexandri at Namadgi National Park - 6 Apr 2023 01:20 PM
Juncus alexandri subsp. alexandri at Namadgi National Park - 6 Apr 2023 01:20 PM
Juncus alexandri subsp. alexandri at Namadgi National Park - 6 Apr 2023 01:20 PM
Juncus alexandri subsp. alexandri at Namadgi National Park - 6 Apr 2023 01:20 PM
Juncus alexandri subsp. alexandri at Namadgi National Park - 6 Apr 2023 01:20 PM
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Identification history

Juncus alexandri subsp. alexandri 3 Dec 2023 Tapirlord
Juncus alexandri subsp. alexandri 7 Aug 2023 Tapirlord
Juncus (genus) 7 Apr 2023 CarbonAI
Juncus sarophorus 7 Apr 2023 JaneR

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User's notes

Not confident of ID. Characteristics other than in photos are: tussocks to 2 m tall, pith continuous, culm diameter 2-3 mm, cataphylls to 23 cm, involucral bract to 24 cm. Growing in small wetlands, sometimes in shallow water.

6 comments

Tapirlord wrote:
   7 Apr 2023
Juncus brevibracteus or Juncus usitatus would be my suggestions.
JaneR wrote:
   8 Apr 2023
Influenced by your suggestion, I revisited the NSW and VIC keys and descriptions, plus I remembered a key characteristic (hard culm), and am suggesting Juncus brevibracteus.
JaneR wrote:
   8 Apr 2023
But can't find Juncus brevibracteus on the lists
JaneR wrote:
   8 Apr 2023
Still not comfortable with the ID.
Juncus brevibracteus usually occurs at higher elevations than this (by about 300m), in subalpine habitat. Juncus usitatus not a good match: usually at lower and lowland areas, it tends be shorter, culms are narrower and soft.
Juncus sarophorus fits habitat and elevation range, and most of size and culm characteristics, except culm colour.
Tapirlord wrote:
   8 Apr 2023
Hmmmmm, another suggestion might be J.alexandri alexandri. I discounted it initally as we are a bit low and the specimen images on Vicflora have this looking a whole lot like J.australis. But, we do have hard, mid-green culms and continuous pith......
Tapirlord wrote:
   8 Apr 2023
I do know that J.alexandri does occur at lower elevation, largely in frost hollows. I myself have only ever seen it high up amongst snow gums, either above or nearly above the treeline.

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Location information

Sighting information

Additional information

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

Species information

  • Juncus alexandri subsp. alexandri Scientific name
  • Common name
  • Not Sensitive
  • Local native
  • Non-invasive or negligible
  • Up to 1562.39m Recorded at altitude
  • Machine learning

Record quality

  • Images or audio
  • 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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