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Pond water starwort

Callitriche stagnalis · Aquatic plants

Pond water starwort: A stand of it

A stand of it · Photo: andrew2285 / CC0

IntroducedSubmerged

Also called Mud water starwort

How to identify Pond water starwort

  • Only spoon shaped leaves, even underwater
  • Floating rosettes at the surface
  • Pale fruits with broad wings

Similar plants

Native starworts have narrow underwater leaves, while this species has broad spoon shaped leaves throughout.

Growth profile

Growing seasonGrows from early spring into fall in mild areas and may remain green over winter.
Starts growingAbout 45 F water
LightTolerates moderate turbidity
DepthMoist mud to 2 feet
How it spreadsStem fragments and seeds
HabitatLowland ditches, ponds and wet ruts over mud.

Why it matters in a lake

A European plant that has spread in western lowlands. Forms dense mats in ditches and shallow ponds.

Where it is found

  • Idaho: Rare
  • Oregon: Occasional
  • Wyoming: Not recorded

Classification

KingdomPlantae
PhylumTracheophyta
ClassMagnoliopsida
OrderLamiales
FamilyPlantaginaceae
Scientific nameCallitriche stagnalis

Need a hand?

Is it taking over your lake?

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Idaho / Wyoming (208) 501-4531Oregon (541) 280-0596