West Highland Flora

Downy Oat-grass


Avenula pubescens

 

Avenula pubescens

Photo Carl Farmer
12 Jul 2003 Suardal, Skye

Fairly common in alkaline grassland and limestone rock crevices.

These pictures taken in very windy conditions; hoping for better ones at some point.

Spikelets c 10-16 mm.  Plant typical medium grass height, 30-100 cm tall.

ID: Lower sheaths hairy.  Panicle branches in whorls of 3 or more, many with only one spikelet, normally none with more than 3 spikelets.  Spikelets normally have 2-3 flowers, all with awns protruding about 10-15 mm beyond the end of the spikelet.

Other features: Looks like a subdued version of Tall Oat Grass, but that usually has just one awn sticking out of most spikelets, if two then at least one of them protrudes by less than 10 mm.  Our species has 2 or 3 protruding awns (usually 2 in my experience).  Meadow Oat Grass has 3-6.  Yellow Oat Grass has 2-4 but the spikelets are much smaller than our species, about 6 mm long.

Ligule c 3-7 mm long.  Lower leaves may be hairy like the sheaths, upper leaves hairless. 

 

Avenula pubescens

Photo Carl Farmer
29 Jun 2003 Suardal, Skye

  Avenula pubescens

Photo Carl Farmer
29 Jun 2003 Suardal, Skye

  Avenula pubescens

Photo Carl Farmer
29 Jun 2003 Suardal, Skye
 

         

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