West Highland Flora

Greater Bladderwort


Utricularia vulgaris agg

Taxonomic note: Includes U vulgaris s.s. and U australis.

Utricularia australis

Photo Dr Stephen Bungard
Isle of Raasay

Occasional in moorland pools and lochs, especially those with somewhat alkaline water.

Leaves c 2-2.5 cm long, bladders c 3 mm.

ID: Leaves have teeth with bristles on, like U intermedia, but have many bladders on the green leaves, like U minor

Other features: Leaves much larger and more divided than the other two species, not fan-shaped but with a distinct wavy central rachis/midrib off which the further divisions (leaflets) branch.  Does not have colourless bladder-only stems like the other two species, but has many bladders on all the leaves.

Does not flower this far north.  The two species, U vulgaris s.s. and U australis, cannot be told apart with certainty on non-flowering specimens, and so are here lumped together.  The plant in the pictures is U australis, and it is likely that all Skye plants are this species.

 

Utricularia australis

Photo Dr Stephen Bungard
Isle of Raasay


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