Brittle Gum at Stromlo, ACT
Identification history
Comments from moderator
We will save the record, but the tree is too hard to ID. See comments.| Insufficient or inconclusive evidence | 7 Mar 2022 | MichaelBedingfield | ||
| Eucalyptus rossii | 4 Mar 2022 | Tapirlord | ||
| Eucalyptus mannifera | 21 Feb 2022 | MichaelMulvaney | ||
| Eucalyptus mannifera | 21 Feb 2022 | Tapirlord | ||
| Unidentified | 21 Feb 2022 | BarrieR |
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10 comments
MatthewFrawley
wrote:
21 Feb 2022
With gum trees it's beneficial for IDing to get as many photos of different parts of the plant as possible, especially leaves, buds and fruit.
MatthewFrawley
wrote:
27 Feb 2022
Just a question here, not being facetious, but how do we know this isn't Eucalyptus rossii? I can even see scribbles on the trunk in that photo and there are no other identifying features provided. Just curious as to what I'm missing.
Tapirlord
wrote:
27 Feb 2022
From my perspective, this ID is likely but not 100% certain, becuase as you say, we really need images of foliage and fruit to make a definitive ID (depending on spcies of couse). I went with mannifera over rossii as the new bark in the foreground of the photo is a creamy white colour (Yellow in Rossii), though it will become darker with age in both species. Otherwise it could in theory be either (the scribbles can occur on both species I believe, if anything the faint scribble suggest mannifera, Rossii tends to have a greater denisty). I would encourage anyone who is trying to differentiate Rossii & mannifera in the field to use the "rub test" as the bark of mannifera should give off a fine powder (doesn't occur in Rossii). The compressed bark at the base of the limbs "wrinkly armpits" is another thing to look for (diagnostic of Rossii).
MatthewFrawley
wrote:
27 Feb 2022
Thanks for the extra info Tapirlord, next time I'm in Bluetts I might hunt this tree down and see what I find.
BarrieR
wrote:
4 Mar 2022
Hi guys. today I went and had another look at this tree, and as a result have just posted some new photos which may help in the ID. I couldn't see any powder on the bark after rubbing the bark in several places, there was only one under arm wrinkles, not especially pronounced, and, low down, 2-3 minor squiggles. Hope all this helps
Barrie
Barrie
MatthewFrawley
wrote:
4 Mar 2022
Thanks Barrie, have had a look at the new sighting (you can add those extra photos to this sighting if you like), and I'd be inclined to say it is a Scribbly Gum, as my field guide says that the Brittle Gum only has a maximum of 7 buds per umbel. The fruit also fit the description of having a flattened, reddish top.
BarrieR
wrote:
6 Mar 2022
Many thanks for all your comments. How do I combine the two sightings, please?
Tapirlord
wrote:
6 Mar 2022
Probably best to delete one but I'll leave that to Michael, Duplicate record probably doesn't really hurt given the location. @MatthewFrawley
Location information
Sighting information
Species information
- Eucalyptus mannifera Scientific name
- Brittle Gum Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 932.7m Recorded at altitude
- Machine learning
-
In flower
- External link More information
Record quality
- 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
