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Gum TreeEucalyptus globulus subsp. bicostata

Southern Blue Gum, Eurabbie at Pine Island to Point Hut

3 images

Eucalyptus globulus subsp. bicostata at Pine Island to Point Hut - 20 Aug 2018
Eucalyptus globulus subsp. bicostata at Pine Island to Point Hut - 20 Aug 2018
Eucalyptus globulus subsp. bicostata at Pine Island to Point Hut - 20 Aug 2018

Identification history

Gum Tree Eucalyptus globulus subsp. bicostata 31 Aug 2018 MichaelMulvaney
Gum Tree Eucalyptus globulus subsp. bicostata 27 Aug 2018 michaelb
Gum Tree Eucalyptus saligna 26 Aug 2018 michaelb
Unidentified 26 Aug 2018 michaelb

Author's notes

Apparently planted and multiplying; also been cut down by rangers and regrown; on the east side of the Murrumbidgee River, north of Pine Island.

13 comments

michaelb wrote:
   26 Aug 2018
If my memory is correct Rainer R told me that these were Sydney Blue Gums. The name which ANBG gives is Eucalyptus saligna, and it would be a new one for our species list.
Mike wrote:
   26 Aug 2018
Maybe another Blue Gum Eucalyptus globulus subsp. bicostata. This is being removed from some areas as it is a fire hazard and an invasive non-local species.
natureguy wrote:
   26 Aug 2018
Eucalyptus globulus is the Tasmanian Blue Gum not the Sydney Blue Gum.
Mike wrote:
   26 Aug 2018
That's why I said 'maybe another Blue Gum'. We will have to wait for Rainer to say whether MIchaelb's recollection is correct. I think there's more than one Sydney Blue Gum too.
natureguy wrote:
   26 Aug 2018
I just checked and Eucalyptus saligna appears to be the only Sydney Blue Gum.
Mike wrote:
   26 Aug 2018
I am no expert so I got my info from Wikipedia - - 'sometimes regarded as blue gums … Sydney blue gum (Eucalyptus notabilis)', though the entry for that doesn't mention blue gum.
I think the third photo of this sighting shows juvenile foliage like E. globulus. 'opposite pairs on square stems' but I will wait for the experts.
michaelb wrote:
   27 Aug 2018
Maybe I was told Blue Gum. Mike's suggestion seems more accurate. So I've changed my suggestion to Eucalyptus globulus subsp. bicostata.
   31 Aug 2018
Eucalyptus globules subsp bicostata is a mainland (largely Victorian species) that grows on the great Dividing Range up to north of Armidale. It is called Sydney Blue Gum by old Nurseyman like Rainer and is one of the most common eucalyptus plantings in the Canberra region.
rainer wrote:
   31 Aug 2018
There are at least three “types” of blue gums that have been planted in our region. According to PlantNet, one, formerly known as E. globulus is now E. pseudoglobulus (http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~pseudoglobulus), in our region apparently only natural in the South Coast Botanical Region, and E. bicostata (http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~bicostata) from the South-western Slopes region, where it meets the Southern Tablelands. The link to AVH on both species’ pages in PlantNet takes you to the same page, to a taxon called E. globulus subsp. pseudoglobulus. Another formerly recognised species was E. st johnii. This taxon, from Victoria, is now also apparently regarded as a subspecies of E. globulus. So, what were perhaps three taxa are really only one, E. globulus subsp. pseudoglobulus. Sydney Blue Gum, E. saligna, is quite different. It also occurs in the coastal ranges east of Canberra. The Tasmanian Blue Gum is E. globulus subsp. globulus. Here’s a factsheet on the weediness of that taxon, and I’d say it would probably refer to all globulus subspecies. https://keyserver.lucidcentral.org/weeds/data/media/Html/eucalyptus_globulus_subsp._globulus.htm
michaelb wrote:
   31 Aug 2018
Thanks Michael M. I'm glad my memory is still functioning !
   31 Aug 2018
Plantnet is out of step with the approved names. The approved names are subspecies of Eucalyptus globulus - Eucalytus globulus subsp. bicostata (Eucalyptis bicostata and Eucalyptus St Johnii) and Eucalyptus globulus subsp. pseudoglobulus (Eucalyptus pseudoglobulus).
Euclid4 fact sheets: bicostata - http://keyserver.lucidcentral.org:8080/euclid/data/02050e02-0108-490e-8900-0e0601070d00/media/Html/Eucalyptus_globulus_subsp._bicostata.htm
pseudoglobulus - http://keyserver.lucidcentral.org:8080/euclid/data/02050e02-0108-490e-8900-0e0601070d00/media/Html/Eucalyptus_globulus_subsp._pseudoglobulus.htm
Subsp. globulus - http://keyserver.lucidcentral.org:8080/euclid/data/02050e02-0108-490e-8900-0e0601070d00/media/Html/Eucalyptus_globulus_subsp._globulus.htm
rainer wrote:
   31 Aug 2018
Not sure how up-to-date AVH is in comparison to the Euclid key. See my note about AVH.
rainer wrote:
   31 Aug 2018
By the way, I didn’t mention Sydney Blue Gum in relation to this sighting. I merely said it was one of the blue gums, but recognise Sydney Blue Gum as being quite different!

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Nearby Sightings

Page 1 of 1 pages - image sightings only 73 0 23

Corvus coronoides (Australian Raven) at Pine Island to Point Hut - 20 Aug 2018 Taxeotis intextata (Looper Moth, Grey Taxeotis) at Pine Island to Point Hut - 7 Dec 2017 Dissomorphia australiaria (Dashed Geometrid) at Pine Island to Point Hut - 19 Nov 2017 Philemon corniculatus (Noisy Friarbird) at Pine Island to Point Hut - 26 Oct 2017 Thaumetopoeinae sp. (family) (Bag-shelter Moths, Processionary Caterpillars) at Pine Island to Point Hut - 21 Dec 2016 Psaltoda moerens (Redeye Cicada) at Pine Island to Point Hut - 21 Dec 2016 Cicadettini sp. (tribe) (Cicada) at Pine Island to Point Hut - 21 Dec 2016 Austrostipa scabra subsp. falcata (Rough Speargrass) at Pine Island to Point Hut - 17 Nov 2016 Rosulabryum sp. (A moss) at Pine Island to Point Hut - 17 Nov 2016 Vanessa kershawi (Australian Painted Lady) at Pine Island to Point Hut - 22 Feb 2016 Solaenodolichopus sp. (genus) (Millepede) at Pine Island to Point Hut - 4 Feb 2016 Grevillea juniperina (Grevillea) at Pine Island to Point Hut - 25 Jan 2016 Gastrimargus musicus (Yellow-winged Locust or Grasshopper) at Pine Island to Point Hut - 13 Jan 2016 Merops ornatus (Rainbow Bee-eater) at Pine Island to Point Hut - 3 Jan 2016 Tachyglossus aculeatus (Short-beaked Echidna) at Pine Island to Point Hut - 4 Oct 2015 Nephila edulis (Golden orb weaver) at Pine Island to Point Hut - 30 Mar 2015 Hakea decurrens subsp. decurrens (Bushy Needlewood) at Pine Island to Point Hut - 30 Mar 2015 Oedaleus australis (Australian Oedaleus) at Pine Island to Point Hut - 2 Jan 2015 Eolophus roseicapillus (Galah) at Pine Island to Point Hut - 25 Nov 2014 Coracina novaehollandiae (Black-faced Cuckooshrike) at Pine Island to Point Hut - 16 Apr 2014 Artamus cyanopterus (Dusky Woodswallow) at Pine Island to Point Hut - 2 Apr 2014 Sorghum leiocladum (Wild Sorghum) at Pine Island to Point Hut - 7 Mar 2007 Echinochloa crus-galli (Barnyard Grass) at Pine Island to Point Hut - 6 Mar 2007
Corvus coronoides (Australian Raven) at Pine Island to Point Hut - 20 Aug 2018
Taxeotis intextata (Looper Moth, Grey Taxeotis) at Pine Island to Point Hut - 7 Dec 2017
Dissomorphia australiaria (Dashed Geometrid) at Pine Island to Point Hut - 19 Nov 2017
Philemon corniculatus (Noisy Friarbird) at Pine Island to Point Hut - 26 Oct 2017
Thaumetopoeinae sp. (family) (Bag-shelter Moths, Processionary Caterpillars) at Pine Island to Point Hut - 21 Dec 2016
Psaltoda moerens (Redeye Cicada) at Pine Island to Point Hut - 21 Dec 2016
Cicadettini sp. (tribe) (Cicada) at Pine Island to Point Hut - 21 Dec 2016
Austrostipa scabra subsp. falcata (Rough Speargrass) at Pine Island to Point Hut - 17 Nov 2016
Rosulabryum sp. (A moss) at Pine Island to Point Hut - 17 Nov 2016
Vanessa kershawi (Australian Painted Lady) at Pine Island to Point Hut - 22 Feb 2016
Solaenodolichopus sp. (genus) (Millepede) at Pine Island to Point Hut - 4 Feb 2016
Grevillea juniperina (Grevillea) at Pine Island to Point Hut - 25 Jan 2016
Gastrimargus musicus (Yellow-winged Locust or Grasshopper) at Pine Island to Point Hut - 13 Jan 2016
Merops ornatus (Rainbow Bee-eater) at Pine Island to Point Hut - 3 Jan 2016
Tachyglossus aculeatus (Short-beaked Echidna) at Pine Island to Point Hut - 4 Oct 2015
Nephila edulis (Golden orb weaver) at Pine Island to Point Hut - 30 Mar 2015
Hakea decurrens subsp. decurrens (Bushy Needlewood) at Pine Island to Point Hut - 30 Mar 2015
Oedaleus australis (Australian Oedaleus) at Pine Island to Point Hut - 2 Jan 2015
Eolophus roseicapillus (Galah) at Pine Island to Point Hut - 25 Nov 2014
Coracina novaehollandiae (Black-faced Cuckooshrike) at Pine Island to Point Hut - 16 Apr 2014
Artamus cyanopterus (Dusky Woodswallow) at Pine Island to Point Hut - 2 Apr 2014
Sorghum leiocladum (Wild Sorghum) at Pine Island to Point Hut - 7 Mar 2007
Echinochloa crus-galli (Barnyard Grass) at Pine Island to Point Hut - 6 Mar 2007

Page 1 

Location

Location information

Species information

  • Not Sensitive
  • Non-local Native
  • Minor Weed or Pest

Sighting information

  • 4 - 15 Abundance
  • 20 Aug 2018 5:22 PM Recorded on
  • michaelb Recorded by
  • Website Reported via
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