West Highland Flora

Marsh x Great Horsetail


Equisetum x font-queri

 

Equisetum x font-queri

Photo Carl Farmer
22 Jul 2004 Rigg, Skye
Height of picture c 46 cm

Only occurs in one locality; there abundant.  Habitat includes road verge, burn edge and moorland.

Height c 30-70 cm

ID: The branches on the lower half of the stem have their first internode much shorter than the stem sheath.  Branches in regular whorls of between 10 and 20 on most plants, many of the branches having 5 angles or ribs.  Branches not drooping.  Main stem has pronounced grooves and ridges down its length, easily felt to the touch.  Main stem pale green.

Other features: Intermediate between the parents, Marsh Horsetail and Great Horsetail.  Cones are on the green stems in Spring as in Marsh H, not on special brown stems as in Great H.  Spores are produced but are sterile.

 

Equisetum x font-queri

Photo Carl Farmer
22 Jul 2004 Rigg, Skye
Distance between 2nd and 3rd nodes from bottom of pic c 21 mm

  Equisetum x font-queri

Photo Carl Farmer
22 Jul 2004 Rigg, Skye
Sheath c 11 mm high including teeth

Showing branch internode shorter
than stem sheath


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