Rytidosperma duttonianum
Brown-back Wallaby Grass at Mitchell, ACT
Identify this sighting
| Rytidosperma duttonianum | Tapirlord | 13 Jan 2023 | |
| Rytidosperma duttonianum | Tapirlord | 11 Jan 2023 | |
| Rytidosperma caespitosum | MattM | 11 Jan 2023 |
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User's notes
Inflorescence provided to me by a colleague. Location is Gungaderra Grasslands Nature Reserve.
5 comments
11 Jan 2023
Using the PlantNet key this keys to R. caespitosum as the lemmas are not golden-brown. However the VICFlora key could go to either R. duttonianum or eventually continue to R. caespitosum depending on how couplet 10 is interpreted. Reading the VICFlora descriptions, the descriptions and measurements for the lemma and lateral lobes are a better match for R. duttonianum.
11 Jan 2023
I got to R.duttonianum fairly easily in the Vicflora key (didn't even consider using plantnet), my understanding is the lemmas are paler when young maturing to a golden-brown color. I'm not quite sure about the dimensions of the individual seeds, in R.duttonianum they are significantly wider.
11 Jan 2023
Also I believe that the lower branch of the flower stem is devoid of spikelets for the lower 1/3 to 1/2 of its length, suggesting R. duttonianum.
https://www.inaturalist.org/observations/145393807
https://www.inaturalist.org/observations/145870151
https://www.inaturalist.org/observations/145393807
https://www.inaturalist.org/observations/145870151
13 Jan 2023
I'd agree with R. duttonianum. Lemma looks too broad for R. caespitosum and extent of bare lemma is more typical of R. duttonianum. Checking paleas can also help ID - broad lanceolate and mostly hairless in duttonianum and narrow lanceolate and hairy in caespitosum
Location information
- Coordinates 149.127652-35.211049
- Maps Gungaderra Grasslands
- Places Mitchell, ACT
Sighting information
- 1 Abundance
- 9 Jan 2023 12:00 PM Recorded on
- MattM Recorded by
Collections
Species information
- Rytidosperma duttonianum Scientific name
- Brown-back Wallaby Grass Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 772.53m Recorded at altitude
Record quality
Quality score
4 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- Description
- Nearby sighting(s) of same species
- GPS evidence of location
- Additional attributes