Skye Flora

Sand Sedge


Carex arenaria

 

Carex arenaria

Photo © Carl Farmer
24 Jun 2003 Glenbrittle
Inflorescence c 4.7 cm long

Only on sandy foreshores, a rare habitat on Skye

Fruits c 4-5 mm.  Inflorescence c 3-8 cm long.

Skye ID: Shoots arranged in straight lines across the sand; can be id'd without flowers or fruit by this.  Alternatively, id'd by having several (not just one or two) upper spikes all-male, the middle spikes male at top, female at base, and the lower spikes all-female.

Other features: 5-16 spikes in a rather compact cluster.  Fruit yellowish-brown when ripe, winged, the upper half of the wings toothed, beak of fr c 1 mm, well-notched.  Bracts of spikes are like glumes with a long point.

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Carex arenaria

Photo © Carl Farmer
23 Sep 2002 Glenbrittle

Straight line formed by shoots across sand

  Carex arenaria

Photo © Carl Farmer
24 Jun 2003 Glenbrittle
Inflorescence c 4.7 cm long

 

Carex arenaria

Photo © Carl Farmer
24 Jun 2003 Glenbrittle

Yellow stamens of male flowers at tip of a spike which is 2/3 the way
down the infloresence and so has mostly female flowers, as shown by
the young green fruits with small brown stigmas at their tips.

 

Carex arenaria

Photo © Carl Farmer
(8 Jun 2002 Cocklawburn, Northumbria)


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