Myriophyllum crispatum
Water Millfoil at Monash, ACT
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| Myriophyllum crispatum | JaneR | 9 Aug 2023 | |
| Myriophyllum papillosum | JaneR | 10 May 2021 | |
| Myriophyllum papillosum | MichaelBedingfield | 10 May 2021 | |
| Myriophyllum crispatum | MichaelBedingfield | 2 May 2021 |
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User's notes
At Isabella Pond.
6 comments
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 ?
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.
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
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.
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
- 10cm to 30cm Plant height
- Yes In flower
Collections
- MichaelBedingfield Canberra & Southern Tablelands NatureMapr Myriophyllum crispatum Other Fresh Water Plants Plants
Species information
- Myriophyllum crispatum Scientific name
- Water Millfoil Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 923m Recorded at altitude
Record quality
Quality score
6 / 7
- Images or audio
- More than one media file
- Verified by an expert moderator
- GPS evidence of location
- Description
- Additional attributes
- Nearby sighting(s) of same species