West Highland Flora

Common Water-starwort


Callitriche stagnalis agg.

Comprises (in the British Isles): C stagnalis, C platycarpa, C palustris and C obtusangula.

Callitriche stagnalis

Photo Carl Farmer
20 Sep 2001 Portree, Skye

Common in pools, ditches and on wet mud.

Rosette leaves usually c 10-20 mm long.

ID: Submerged leaves as well as floating (rosette) ones are broadly elliptical, not linear.

Other features: Tiny unisexual flowers, without sepals or petals, but with either 1 stamen or 2 styles, in the axils of the rosette leaves, followed by near-spherical fruit c 1-2 mm across.  Submerged leaves become narrower and longer-stalked the further down you go, but never linear as in other Callitriche species.

Identification to species level is beyond the scope of this site.  Many botanists simply record the aggregate, as I do.

 

  Callitriche stagnalis

Photo Carl Farmer
25 Aug 2002 Scorrybreac, Skye

 
     
     
  Callitriche stagnalis

Photo Carl Farmer
13 Oct 2002 Portree, Skye

 

 
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