Plants
Orchids
Sighting 4422071

Diuris sulphurea

Tiger Orchid at Bruce, ACT

Diuris sulphurea at Bruce, ACT - suppressed
Diuris sulphurea at Bruce, ACT - suppressed
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Identification history

Diuris sulphurea 3 Feb 2022 DerekC
Diuris nigromontana 2 Feb 2022 Rebeccaryanactgov

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5 comments

MichaelMulvaney wrote:
   3 Feb 2022
Thanks for putting up this spring photo - there are very few recorded locations of Black Mountain Donkey orchid on Bruce Ridge and I am a little concerned that this may be due to its high mountain bike usage and what the crisscrossing of it with tracks does to the fungal mycrrorhiza. It is species that seems favoured by fire and on Black Mountain is more common on lower flatter slopes which seems to make Bruce Ridge otherwise favourable habitat.
MattM wrote:
   3 Feb 2022
I am sorry to say but this looks like Diuris sulphurea. The horizontal dorsal sepal with the two blotches is a much closer match for sulphurea than it is to nigromontana. The flowering time of early September is quite early for sulphurea though.
Rebeccaryanactgov wrote:
   3 Feb 2022
Thank you both for the comments. I was going back and forth trying to positively ID.
I’ve mistakenly put in the wrong date, it was the 20th November 2021.
DerekC wrote:
   3 Feb 2022
Sorry MattM, my mistake you are correct it is D. sulphurea.
MichaelMulvaney wrote:
   3 Feb 2022
Thanks Matt and Derek

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Location information

Sighting information

Additional information

  • 10cm to 30cm 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
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