Fungal gall of Exocarpos sp.
Tuggeranong DC, ACT
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| Fungal gall of Exocarpos sp. | MichaelMulvaney | 21 Feb 2019 | |
| Uromycladium (genus) | MichaelMulvaney | 8 Feb 2019 | |
| Unverified | Mike | 11 Oct 2017 |
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User's notes
Gall on Exocarpos.
9 comments
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.
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.
9 Feb 2019
I added this sighting because of discussion on 
Exocarpos cupressiformis (Cherry Ballart) on 7 Oct 2017 about galls on Exocarpos cupressiformis.
Exocarpos cupressiformis (Cherry Ballart) on 7 Oct 2017 about galls on Exocarpos cupressiformis.
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Some of the information presented concerning Exocarpos cupressiformis (Cherry Ballart) on 7 Oct 2017 is now out of date.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.
Exocarpos cupressiformis (Cherry Ballart) on 7 Oct 2017 is now out of date.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.
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.
The fungus gall on Acacia dealbata is T Murphyi according to this list of hosts.
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.
6 Sep 2026
Refer-(Yukawadiplosis, a new genus of gall midge (Diptera: Cecidomyiidae) from Exocarpos cupressiformis (Santalaceae) in Australia) https://link.springer.com/article/10.1007/s13355-025-00951-7
Came across this paper but I don't have access to it. Is this the organism that triggers the galls as seen in this sighting?
Came across this paper but I don't have access to it. Is this the organism that triggers the galls as seen in this sighting?
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 gall of Exocarpos sp. 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
- Up to 752m Recorded at altitude
Record quality
Quality score
4 / 7
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- GPS evidence of location
- Description
- More than one media file
- Nearby sighting(s) of same species
- Additional attributes