West Highland Flora

Shoreweed


Littorella uniflora

 

Littorella uniflora

Photo Carl Farmer
6 Aug 2003 Dunvegan, Skye

Common in and around the edges of lochs and slow-moving margins of rivers.

Flower stamens 1-2 mm long (pic on left)  Leaves c 2-10 cm long

ID: Unmistakable when flowering, which it only does when not underwater.  Non-flowering underwater rosettes id'd by: Leaves with one side flat and the other rounded (or approximating to this), with a transparent brownish sheathing stipule at base.  Leaves spongy inside, neither hollow nor solid but with many small air spaces.

Other features: Each rosette has 1 conspicuous long-stalked male flower with 4 long stamens, and about 1-4 female flowers at the base of its stalk.  Forms close carpets on loch shores and down to 4 m depth.

 

Littorella uniflora

Photo Carl Farmer
6 Aug 2003 Dunvegan, Skye

  Littorella uniflora

Photo Carl Farmer
6 Aug 2003 Dunvegan, Skye

 

Littorella uniflora

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye

  Littorella uniflora

Photo Carl Farmer
5 Aug 2003 Storr, Skye
Leaf on left 5.5 cm

Loose plants are often found floating (right, with a background of submerged Shoreweed) or washed up (above).  Some populations have longer and thinner leaves than others as is seen from these two specimens.

 

 

Littorella uniflora

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye

 

Littorella uniflora

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye
 

  Littorella uniflora

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye

The above 3 pictures are of submerged plants


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