Fungal gall of Exocarpos sp.

Tuggeranong DC, ACT

Identification history

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8 comments

MichaelMulvaney wrote:

   8 Feb 2019

See page 159 of Farrow (2016)

Mike wrote:

   8 Feb 2019

Thanks Michael. Page 158 also solves one of my other ID problems.

KenT wrote:

   8 Feb 2019

Unfortunately as it is currently known, the genus Uromycladium is restricted in its host range to four genera within the Fabaceae (see Doungsa-ard, C.; McTaggart, A.R.; Geering, A.D.W.; Shivas, R.G. (2018) Diversity of gall-forming rusts (Uromycladium, Pucciniales) on Acacia in Australia, Persoonia Volume 40, June 2018, pp. 221-238). One or more fungi may be involved but not Uromycladium until someone can demonstrate otherwise.

julielindner wrote:

   9 Feb 2019

It looks to me to be a fasciation a condition that causes distortion of the growing tip. This can be caused by a hormonal imbalance, genetic mutation, bacterial, fungal or viral infection, insect attack or physical injury.

Mike wrote:

   9 Feb 2019

I added this sighting because of discussion on Exocarpos cupressiformis (Cherry Ballart) on 7 Oct 2017 about galls on Exocarpos cupressiformis.

KenT wrote:

   9 Feb 2019

Some of the information presented concerning Exocarpos cupressiformis (Cherry Ballart) on 7 Oct 2017 is now out of date. Uromycladium tepperianum has been split into a further 16 species, Uromycladium tepperianum in the strict sense is currently only known from Acacia cupularis, A. ligulata, A. rostellifera, A. sclerosperma and A. xanthina and occurs in South Australia and Western Australia. Uromycladium notabile was found to be based on two separate species so it has ceased to be recognised. The paper referenced by Scurfield 1965 appears not to have been followed up by anyone since that I can find - it might make a decent honours thesis to repeat the work and apply modern molecular techniques to the problem.

RogerF wrote:

   7 Feb 2024

I have only just read these comments 5 years later and have accordingly looked up the 2018 paper that was not published at the time of writing my book
The fungus gall on Acacia dealbata is T Murphyi according to this list of hosts.

KenT wrote:

   7 Feb 2024

There are two genera of gall forming fungi on Acacia dealbata representative species being Uromycladium murphyi and Endoraecium carnegiei. Aside from using molecular diagnostic methods they can be distinguished by examination of the spores under a compound microscope (400x is adequate). For Endoraecium see: A.R. McTaggart, C. Doungsa-ard, A.D.W. Geering, M.C. Aime, R.G. Shivas (2015) A co-evolutionary relationship exists between Endoraecium (Pucciniales) and its Acacia hosts in Australia. Persoonia 35: 50–62.

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Location information

• Coordinates 149.118333-35.385000
• Altitude 752.0m
• Maps Wanniassa Hill
• Places Tuggeranong DC, ACT

Sighting information

• 16 - 100 Abundance
• 11 Oct 2017 12:01 PM Recorded on
• Mike Recorded by

• Collections

  Exocarpos associations Mike NatureMapr Canberra & Southern Tablelands Fungal galls Fungal galls, other rusts, leaf spots, etc Fungi

Species information

• Fungal gall of Exocarpos sp. Scientific name
• Common name
• Not Sensitive
• Local native
• Non-invasive or negligible
• 752m Recorded at altitude
• Machine learning

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• 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