Guilleminea densa
Small Matweed at Uriarra Village, ACT
Identify this sighting
| Guilleminea densa | BettyDonWood | 30 Mar 2017 | |
| Guilleminea densa | BettyDonWood | 30 Mar 2017 | |
| Alternanthera pungens | MichaelMulvaney | 25 Mar 2017 | |
| Unverified | Mike | 25 Mar 2017 |
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Significant sighting
MichaelMulvaney noted:
31 Mar 2017
A new weed from America not previously recorded in the ACT, though there is a 2004 record from just outside the border. Seems to eb mainly a weed of disturbed areas.
User's notes
Prostrate, stems about 30cm.
7 comments
26 Mar 2017
Not Alternanthera pungens, whose outer periant segments are sort of papery and have sharp points. I don't think it is Alternanthera at all in fact. The flowers appear to be flattish with 5 lobes. It does not appear to be in the Biosecurity Queensland ID key. I ticked search fields herb habit, creeping, white flower, 5 petals, and flower size small or medium. None of the 53 weeds that resulted looked anything like this plant. It could be family Boraginaceae, but looks nothing like any weedy borage I know.
31 Mar 2017
It still does not look like Alternanthera pungens, which has lots of sharp pointed bracts around the flower clusters. See the photos in: http://keyserver.lucidcentral.org/weeds/data/media/Html/alternanthera_pungens.htm
One of those images is a comparison between Alternanthera pungens and Guilleminea densa. Plantnet key to Amaranthaceae sates that flower clusters in Alternanthera are hairless, and in Guilleminea hairy. The hairs round the flowers are obvious in your photos.
One of those images is a comparison between Alternanthera pungens and Guilleminea densa. Plantnet key to Amaranthaceae sates that flower clusters in Alternanthera are hairless, and in Guilleminea hairy. The hairs round the flowers are obvious in your photos.
1 Apr 2017
Thanks for persevering with this one Betty a new species for both me and the ACT
3 Apr 2017
Should I get rid f it? I can remove it and give it to science. Found a description and photo in 'Weeds of the South East'.
3 Apr 2017
Yes please if you good get rid of the plants that would be great thanks Mike
5 Apr 2017
Three plants collected for Herbarium. They have big woody roots. Updated abundance because I found another patch nearby (would have to be dug out).
Location information
- Coordinates 148.960278-35.318889
- Maps Stony Creek
- Places Uriarra Village, ACT
Sighting information
- 4 - 15 Abundance
- 25 Mar 2017 12:51 PM Recorded on
- Mike Recorded by
- Yes In flower
- Less than 10cm Plant height
Collections
- Significant Plants Other Wildflowers & Herbs Mike Canberra & Southern Tablelands NatureMapr Guilleminea densa
Species information
- Guilleminea densa Scientific name
- Small Matweed Common name
- Not Sensitive
- Exotic
- Minor weed or pest
- 532.52m Recorded at altitude
- External link More information
Seasonal activity
-
In flower
JFMAMJJASOND
Record quality
Quality score
7 / 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