West Highland Flora

Bog Hair-grass


Deschampsia setacea

 

Deschampsia setacea

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye

Rare on peaty loch margins

Pictures taken in very windy and dull conditions, hoping for better ones soon.

Stems c 25-45 cm tall.  Spikelets c 4-5 mm long excluding awns

ID: Each spikelet contains two florets, separated by about 1/3 of their length (in Wavy Hair-grass they are almost on a level).  Both florets awned, awns protruding from spikelet by about 1/3  length of spikelet.  Sheaths hairless, unlike Downy Oat Grass which also has spikelets with two well-separated awned florets.  Ligule long, narrow and pointed.  Stem-leaves narrow, no more than 1 mm wide when flat, but usually inrolled and so even narrower.

Other features: Overall impression is of a plant like Wavy Hair-grass but without wavy panicle branches and with spikelets more densely packed.  Spikelets often variegated in colour like other Deschampsia species.  Lemma deeply notched at tip, unlike Tufted and Wavy but like Alpine.

 

Deschampsia setacea

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye

 

Deschampsia setacea

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye
 

The normally spreading panicle bunched up by the wind

 

Deschampsia setacea

Photo Carl Farmer
13 Jul 2003 Sligachan, Skye
 

Only respite from the wind is to fall into the loch


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