Gahnia subaequiglumis
Bog Saw-sedge at Tharwa, ACT
Identify this sighting
| Gahnia subaequiglumis | JaneR | 15 Aug 2025 | |
| Lomandra longifolia | CarbonAI | 15 Aug 2025 | |
| Unverified | Mike | 15 Aug 2025 |
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7 comments
16 Aug 2025
There is a CNM glitch which gives this sighting as local native or rare plant, depending on where you look. Filter on rare plants and this sighting drops off.
16 Aug 2025
I think this is something to do with this species previously being considered rare (in sense of very uncommon) in the ACT; but the ACT is only a part of Canberra and Southern Tablelands, so this perspective doesn't apply across this reporting area.
16 Aug 2025
Thanks @JaneR, but your sighting 4480701 in Nearby Sightings shows as rare/uncommon. Perhaps the category has changed in the last year or so. Both are in Gibraltar Pines though this is Tharwa and yours is Paddy’s River. The Places boundaries could also have changed.
16 Aug 2025
Thanks Mike and Jane - should be still showing as rare in the ACT, so perhaps a glitch in the system. Prior to Naturemapr it was known from one location in the ACT but is still fairly restricted - there is one butterfly species that only eats this particular sedge so good to try and protect some of teh ACT patches
17 Aug 2025
Sign at the carpark says this is rough saw-sedge, which is the common name for Gahnia aspera.
17 Aug 2025
yes, its true that Rough Saw Sedge usually refers to Gahnia aspera, however G. aspera doesn't occur in the ACT. The only Gahnia occurring in the ACT, according to ACT Plant Census (prepared by National Herbarium) is Gahnia subaequiglumis.
Location information
- Coordinates 148.912167-35.520017
- Altitude 1251.0m
- Maps Gibraltar Pines
- Places Tharwa, ACT
Sighting information
- 101 - 1,000 Abundance
- 15 Aug 2025 02:09 PM Recorded on
- Mike Recorded by
Collections
- Mike NatureMapr Canberra & Southern Tablelands Gahnia subaequiglumis Rushes, Sedges & Mat Rushes Plants
Species information
- Gahnia subaequiglumis Scientific name
- Bog Saw-sedge Common name
- Not Sensitive
- Rare or uncommon native
- Non-invasive or negligible
- Up to 1715.99m Recorded at altitude
- External link More information
Record quality
Quality score
5 / 7
- 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