Eucalyptus globulus subsp. bicostata

Southern Blue Gum, Eurabbie at Watson, ACT

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Identification history

Eucalyptus globulus subsp. bicostata	22 May 2016	MichaelMulvaney
Eucalyptus globulus subsp. bicostata	25 Apr 2016	waltraud
Unidentified	23 Apr 2016	waltraud

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User's notes

The photographed specimen is an isolated tree growing uphill of a patch of introduced Eucalyptus trees along a gully that runs parallel and south of Valour park / Federal Highway. They are escapes from trees planted in Valour park. Some mature trees > 20 m. The trees spread like weeds. There are patches of thick bark and leaf litter on the ground; bark of mature trees peels in long ribbons that touch the litter. I identified Eucalyptus globulus subsp. bicostata (http://canberranaturemap.org/Community/Sighting/3343056) along the gully from juvenile leaves and fruits. A second species originally thought to be Eucalyptus viminalis (from juvenile leaves) turned out to be E. aggregata. The map shows the approx. extend of the two species in the nature reserve. The last 3 photos show details of buds (photo taken of material I found on the ground), leaves, and a fruit (taken of material I found on the ground). Fruits and flowers in umbels of three.

3 comments

MichaelMulvaney wrote:

4 May 2016

Blue Gum has also spread from plantings on Red hill

MichaelMulvaney wrote:

7 May 2016

Waltraud if fruits are around that would be good but this looks more like Eucalyptus viminalis than Blue Gum, perhaps you could check and confirm

waltraud wrote:

7 May 2016

Michael
Isobel Crawford and I have been there today; Isobel confirmed Blue gum for this specimen (see leaf size, fruits and buds).
The specimen which grow in the same area and which I thought are E. viminalis turned out to be E. aggregata.

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