Grasses
Good references for local grass species:
Fact Sheets from Grasses of Australia
For example, Themeda triandra, Kangaroo Grass
And Rytidosperma, Wallaby Grasses, by species
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Discussion
Nassella trichotoma
Nassella trichotoma
I mapped and photographed the Serrated Tussock (ST) at this site on the 31 August 2023 and again on the 12 November 2024; I also mapped and photographed ST at adjacent site on 31 August 2023, 1 October 2023 and 12 November 2024. I can't carry a knapsack anymore up the steep slopes and the ST are too numerous and big for me to dig out or to cut by hand and spray with small hand held bottle. I wrote to Parks and Conservation Service / Canberra Nature Park North twice to alert them to this infestation/s. PCS rangers change-over is frequent and rumors are that more staff positions have been cut or will be cut. So the best thing to do is perhaps to write to ACT Government and request adequate resourcing to enable PCS to control highly invasive Weeds of National Significance such as ST. I treated 100s of STs downhill, see for instance https://canberra.naturemapr.org/sightings/4610000. I'm fully aware that the ST infestations uphill, if not controlled, will continue to recruit and lead to new infestations in the surrounds.
Nassella trichotoma
Background: I have a Bradley Method test plot at Umbagong District Park (Latham) to remove St John's Wort. Most people don't use the Bradley Method as it's seen as inefficient and time consuming. However, people also report that methods they usually use don't work (a joint government-landcare / parkcare survey last year). My experience of the Bradley Method is that this is one method that does work for SJW.
The Bradley Method requires you to be able to identify every single plant in the plot as everything non-native is removed, not just SJW. Your ident is therefore very useful, thanks.
In case you're interested, Ginninderra Catchment Group has uploaded the case study on SJW removal using the Bradley Method (now being scaled up), including methods and recording documentation, onto its website: https://ginninderralandcare.org.au/weeding-st-johns-wort-at-umbagong-case-study-resources/
Rytidosperma racemosum
Cenchrus longisetus
Significant sightings
- Hyparrhenia hirta at Theodore, ACT
- Andropogon virginicus at Bango, NSW
- Austrostipa verticillata at Bruce, ACT
- Austrostipa verticillata at Hume, ACT
- Hyparrhenia hirta at Jerrawa, NSW
- Hyparrhenia hirta at Tuggeranong Hill
- Glyceria australis at Garran, ACT
- Australopyrum velutinum at Namadgi National Park
- Austrostipa verticillata at Cooleman Ridge
- Aristida jerichoensis var. subspinulifera at Uriarra Village, ACT
Recent activity
Eragrostis unioloides at Darwin River, NT
Nassella trichotoma at Hackett, ACT
Nassella trichotoma at Hackett, ACT
Eragrostis cilianensis at Strathnairn, ACT
Eragrostis brownii at Strathnairn, ACT
Eragrostis parviflora at Strathnairn, ACT
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