Austrostipa bigeniculata

Kneed Speargrass at Stromlo, ACT

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Identification history

Austrostipa bigeniculata	2 Jan 2023	Tapirlord
Nassella neesiana	30 Dec 2022	Tapirlord
Unidentified	30 Dec 2022	JimL

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User's notes

This stood out as different in that immediate area to other grasses.

7 comments

JimL wrote:

30 Dec 2022

Oh!
Thanks @Tapirlord
Wish I had of pulled it out then.

MattM wrote:

31 Dec 2022

The drooping inflorescence radiating from a single, erect stem makes me think of Austrostipa bigeniculata. Additionally the leaves appear to lack the short hairs characteristic of Chilean needlegrass, but the camera might not have picked up that detail if present.

JimL wrote:

1 Jan 2023

@MattM - more than happy to go for another walk and take a better camera to pick up on this. Having a look at the many reference photos across CNM, I know know what you mean by the short hairs. Don't recall seeing any, but can go back in coming days and get that reference photo for surety.
Cheers,
Jim

Mike wrote:

1 Jan 2023

Pull one of the seeds off. If it is Chilean needlegrass it will have a corona between the seed and the awn as shown in https://canberra.naturemapr.org/sightings/3366054. Austrostipa bigeniculata does not have this.

michaelb wrote:

2 Jan 2023

Agree with MattM & Mike

brunonia wrote:

2 Jan 2023

Looks like A. bigeniculata to me.

Tapirlord wrote:

2 Jan 2023

Thanks everyone, much appreciated.

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