Water Millfoil at Monash, ACT
Identification history
| Myriophyllum crispatum | 9 Aug 2023 | JaneR | ||
| Myriophyllum papillosum | 10 May 2021 | JaneR | ||
| Myriophyllum papillosum | 10 May 2021 | MichaelBedingfield | ||
| Myriophyllum crispatum | 2 May 2021 | MichaelBedingfield |
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User's notes
At Isabella Pond.
6 comments
JaneR
wrote:
10 May 2021
Hi Michael,
There are two Myriophyllum species in our region that are robust, with erect stems in shallow water. They are very similar !! Defining characteristics are:
Myriophyllum crispatum: crisped hairs on stem, usually;: flowers solitary in axils; female flowers deep red: emergent leaves in whorls of 6-9 and terete.
Myriophyllum papillosum: papillae on stems (usually): flowers in fascicles in axils, female flowers deep reddish purple; emergent leaves in whorls of 4-6, linear sometimes dentate.
The only character clearly visible is that emergent leaves are slightly dentate; possibly they are in whorls of 4-6.
Based on this, then more likely M. papillosum.
Perhaps ther is some drift material on the shore that could give a closer look ?
A bonus is that there seems to be some Marsilea mutica out there as well.
perhaps another opinion ?
There are two Myriophyllum species in our region that are robust, with erect stems in shallow water. They are very similar !! Defining characteristics are:
Myriophyllum crispatum: crisped hairs on stem, usually;: flowers solitary in axils; female flowers deep red: emergent leaves in whorls of 6-9 and terete.
Myriophyllum papillosum: papillae on stems (usually): flowers in fascicles in axils, female flowers deep reddish purple; emergent leaves in whorls of 4-6, linear sometimes dentate.
The only character clearly visible is that emergent leaves are slightly dentate; possibly they are in whorls of 4-6.
Based on this, then more likely M. papillosum.
Perhaps ther is some drift material on the shore that could give a closer look ?
A bonus is that there seems to be some Marsilea mutica out there as well.
perhaps another opinion ?
MichaelBedingfield
wrote:
10 May 2021
It is 2 months since my visit & I don't have time to return just now. Note that these were planted in the new landscaped arrangement. Your analysis is much more thorough than mine, so I would be happy to accept your suggestion. Otherwise we could go with Myriophyllum sp.
JaneR
wrote:
10 May 2021
is there a tick box for "plantings" for these plants ?
it is useful to know for people interested in dispersal mechanisms and invasiveness
it is useful to know for people interested in dispersal mechanisms and invasiveness
JaneR
wrote:
9 Aug 2023
I think this is more likely to be Myriophyllum crispatum.
Reviewing distribution records shows that Myriophyllum papillosum is not a local species.
Reviewing distribution records shows that Myriophyllum papillosum is not a local species.
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Nearby sightings
Location information
- Coordinates 149.079738-35.422312
- Altitude 595.1m
- Maps Isabella Pond Tuggeranong Creek to Monash Grassland
- Places Monash, ACT
Sighting information
- 101 - 1,000 Abundance
- 4 Mar 2021 07:20 PM Recorded on
- MichaelBedingfield Recorded by
Additional information
- 10cm to 30cm Plant height
- True In flower
Species information
- Myriophyllum crispatum Scientific name
- Water Millfoil Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 829m Recorded at altitude
- Machine learning
-
In flower
Record quality
- 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
