Myriophyllum verrucosum

Red Water-milfoil at Undefined, ACT

Myriophyllum verrucosum at Undefined, ACT - 1 Jan 2020
Myriophyllum verrucosum at Undefined, ACT - 1 Jan 2020
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Identification history

Myriophyllum verrucosum 9 Jan 2020 MichaelMulvaney
Myriophyllum sp. 2 Jan 2020 BettyDonWood
Myriophyllum verrucosum 2 Jan 2020 JaneR

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User's notes

common in drying rockpools, and in moist patches amongst pebbles.

2 comments

BettyDonWood wrote:
   2 Jan 2020
There are 7 species of Myriophyllum in the CNM area. Some are easy to tell apart from Myriophyllum verrucosum. The fact that the plants turn red when water stressed suggests this actually is verrucosum.
However, I would prefer to call it Myriophyllum sp. The only sure way to ID Myriophyllum to species level is to use a microscope and look at the seed cases.
JaneR wrote:
   2 Jan 2020
I find Myriophyllum verrucosum is fairly distinctive amongst milfoils, not just for its purple-red coloration, but for having dimorphic leaves that are pinnate-submerged with emergent leaves becoming ovate-entire, submerged leaves in whorls of 3, its smallish size and non-robust habit.

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Location information

Sighting information

  • 16 - 100 Abundance
  • 1 Jan 2020 04:26 PM Recorded on
  • JaneR Recorded by

Additional information

  • True In flower
  • Less than 10cm Plant height

Species information

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