West Highland Flora

Intermediate Bladderwort


Utricularia intermedia agg

Taxonomic note: The aggregate consists of 3 species: U intermedia s.s., U stygia and U ochroleuca, which can only be told apart microscopically.

Utricularia intermedia agg

Photo Carl Farmer
12 Jul 2003 Suardal, Skye

Frequent in lochs, slow-moving burns and bog pools.

Bladders c 2-3 mm, leaves c 4-12 mm

ID: Leaves fan-shaped with small bristles on the segments.  Bladders and leaves are on separate stems, with the odd exception.

Other features: Flowers probably never produced in the area.  They are similar to those of Lesser Bladderwort but have red streaks.  If you ever see them get clicking with that camera!

Update: all plants I've examined from the area have turned out to be U stygia.  Will describe microscopic differences here in due course; they are given in Stace.

 

Utricularia intermedia agg

Photo Carl Farmer
6 Aug 2003 Dunvegan, Skye

I don't think it was really this colour but that's typical
of photographing underwater plants.  In this pic you
can see the bristles on the edges of the leaf segments.

  Utricularia intermedia agg

Photo Carl Farmer
12 Jul 2003 Suardal, Skye

A bladder-only stem with a leaf-only stem

 

 

Utricularia intermedia agg

Photo Carl Farmer
12 Jul 2003 Suardal, Skye
 

Stand in the water long enough and it grows over your wellies.


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