Nepean Spider Flower at Watson, ACT
Identification history
| Grevillea arenaria subsp. arenaria | 17 Jun 2022 | Tapirlord | ||
| Grevillea arenaria | 23 Aug 2021 | MichaelMulvaney | ||
| Grevillea arenaria | 23 Aug 2021 | waltraud |
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User's notes
Most in the 1m-1.5m tall category; invading Mt Majura's Grassy Woodland from Federal Highway plantings.
9 comments
waltraud
wrote:
30 Aug 2021
Grevillea arenaria is listed Exotic in the ACT Census of Vascular Plants; see below Census listing:
Grevillea arenaria subsp. arenaria PROTEACEAE Exotic [Aust] 2014 R.W.Purdie 9342 Sand Grevillea
I thought CNM follows the Census?
Apart from the question of whether or not the species is exotic, there are groves of G. arenaria and non-local Acacia sp (as well as Acacia sp listed local in ACT but that are according to my expert advice not naturally occurring on Mt Majura i.e. A. buxifolia) invading Mt Majura northern slopes and changing the critically endangered grassy woodland into something else but grassy woodland. The source of the invasion is the planting along Federal Highway.
Grevillea arenaria subsp. arenaria PROTEACEAE Exotic [Aust] 2014 R.W.Purdie 9342 Sand Grevillea
I thought CNM follows the Census?
Apart from the question of whether or not the species is exotic, there are groves of G. arenaria and non-local Acacia sp (as well as Acacia sp listed local in ACT but that are according to my expert advice not naturally occurring on Mt Majura i.e. A. buxifolia) invading Mt Majura northern slopes and changing the critically endangered grassy woodland into something else but grassy woodland. The source of the invasion is the planting along Federal Highway.
waltraud
wrote:
5 Jun 2022
hi moderators
please see my comment above. Also the ACT Weed officer monitored the grove of these Grevillea as weeds!
Could you please change the status from local to introduced?
Also, the Census of vascular plants lists only G. arenaria subsp. arenaria (and not G. areanaria or G. arenaria subp.).
Thanks Waltraud
please see my comment above. Also the ACT Weed officer monitored the grove of these Grevillea as weeds!
Could you please change the status from local to introduced?
Also, the Census of vascular plants lists only G. arenaria subsp. arenaria (and not G. areanaria or G. arenaria subp.).
Thanks Waltraud
Tapirlord
wrote:
5 Jun 2022
Hi Waltraud,
I'll leave it up to MichaelM to make a call here, but I think that status as it stands is ok. Our project covers a good amount of NSW so I think that should also be taken into account as you can find natuarlly occuring plants around Goulburn, tallanganda and the Bugonia area. Its obviously not ideal, but there are other examples of species which are technically weedy in the ACT being listed as locally native because of a southern tablelands distribution.
Regarding the Names, there seems to be two sets of Grevillea arenaria subsp arenaria, which is some kind of hiccup in the system. But I think we should keep the broader name and just reconfirm this sighting as subsp arenaria if that is technically correct. There are a few other subspecies of Grevillea arenaria Australia wide, so I think global taxonomy will thank us later for keeping both "G.arenaria" and "G.arenaria sub arenaria".
I'll leave it up to MichaelM to make a call here, but I think that status as it stands is ok. Our project covers a good amount of NSW so I think that should also be taken into account as you can find natuarlly occuring plants around Goulburn, tallanganda and the Bugonia area. Its obviously not ideal, but there are other examples of species which are technically weedy in the ACT being listed as locally native because of a southern tablelands distribution.
Regarding the Names, there seems to be two sets of Grevillea arenaria subsp arenaria, which is some kind of hiccup in the system. But I think we should keep the broader name and just reconfirm this sighting as subsp arenaria if that is technically correct. There are a few other subspecies of Grevillea arenaria Australia wide, so I think global taxonomy will thank us later for keeping both "G.arenaria" and "G.arenaria sub arenaria".
waltraud
wrote:
5 Jun 2022
Many thanks Tapirlord
I follow the Census in both the status and the naming of species as well as consulting our local botanist in reg to natural occurance. Best wishes
w
I follow the Census in both the status and the naming of species as well as consulting our local botanist in reg to natural occurance. Best wishes
w
Tapirlord
wrote:
5 Jun 2022
Absolutely, I think CNM tries to stay current with the ACT plant census and the Atlas of living Australia, but that is often difficult so its just a case of forging the best path through. Obviously in this case the Grevilleas are weedy and need to be managed, so it's important that this is recognised and not just thrown under assumption of "locally native".
Perhaps confirming this under subsp arenaria as per the census, and writing a note in the species page (about its weedy status in the ACT) is a good compromise??
@michaelb I think there is a duplicate of "Grevillea arenaria subsp arenaria" in global taxa. :)
Perhaps confirming this under subsp arenaria as per the census, and writing a note in the species page (about its weedy status in the ACT) is a good compromise??
@michaelb I think there is a duplicate of "Grevillea arenaria subsp arenaria" in global taxa. :)
waltraud
wrote:
17 Jun 2022
hi team. I just saw the subp has been removed thanks for that
I talked again to a botanist who confirmed the Grevillea arenaria (subsp arenaria) species is not local
those growing on Mt Majura's north slope grassy woodland have certainly escaped from the Federal Highway plantings along with the non-local Knife-leaf Wattle, Snowy River Wattle and other Australian species which don't belong to the ACT and particularly not to the grassy woodlands .....
I talked again to a botanist who confirmed the Grevillea arenaria (subsp arenaria) species is not local
those growing on Mt Majura's north slope grassy woodland have certainly escaped from the Federal Highway plantings along with the non-local Knife-leaf Wattle, Snowy River Wattle and other Australian species which don't belong to the ACT and particularly not to the grassy woodlands .....
Tapirlord
wrote:
17 Jun 2022
Hi Waltraud, I've changed the ID on this sighting and made a note on the species page regarding the invasive potential of this species in the ACT. I hope this is a good compromise?
Location information
- Coordinates 149.172853-35.222964
- Altitude 636.0m
- Places Watson, ACT
Sighting information
- 4 - 15 Abundance
- 22 Aug 2021 02:21 PM Recorded on
- waltraud Recorded by
-
Collections
waltraud Canberra & Southern Tablelands NatureMapr Grevillea arenaria subsp. arenaria Other Shrubs Plants
Additional information
- 1 metre to 5 metres Plant height
- True In flower
Species information
- Grevillea arenaria subsp. arenaria Scientific name
- Nepean Spider Flower Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 731m Recorded at altitude
-
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