West Highland Flora

Tall Oat Grass


Arrhenatherum elatius

 

Arrhenatherum elatius

Photo Carl Farmer
8 Aug 2002 Portree, Skye

Very common in grassland, roadsides, rough ground and as a garden weed.

Spikelets (ex awns) c 8-10 mm long, the awn protruding typically a further 10 mm.  Plant to 150 cm high, one of the tallest grasses.  Leaves to 10 mm wide.

ID: Usually one awn per spikelet, sometimes a second awn but protruding by less than 10 mm.  This plus general appearance as in pic and size guidelines is enough to ID it.

Other features: Spikelet has 2 flowers, the lower male and awned, the upper female and sometimes awned but usually not.

 

Arrhenatherum elatius

Photo Carl Farmer
14 Jul 2003 Portree, Skye

 

Arrhenatherum elatius

Photo Carl Farmer
8 Jun 2003 Scorrybreac, Skye
 

Flower-spikes just beginning to open.  The third one along (at the rear) is still completely closed.

 

Arrhenatherum elatius

Photo Carl Farmer
14 Jul 2003 Portree, Skye

 

Arrhenatherum elatius

Photo Carl Farmer
14 Jul 2003 Portree, Skye

 

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