West Highland Flora

Black Spleenwort


Asplenium adiantum-nigrum

 

Asplenium adiantum-nigrum

Photo Carl Farmer
8 Aug 2002 Portree, Skye

Common on walls and rocks

Lowest pinnules of middle pinnae c 6-10 mm.  Lowest pinnae 2-6 cm

ID: Stalk blackish, rachis green except at base.  Midrib of pinna has characteristic winged appearance, see pic on left.  Lowest pinnae longest, overall shape narrow-triangular.

Other features: Leaves are rather leathery and glossy.  Sori are linear, on veins, covering much of the underside of the pinna.

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  Asplenium adiantum-nigrum

Photo Carl Farmer
5 Jan 2003 Portree, Skye
Max frond length in pic is 30 cm, max width 15 cm, frond typically 8 cm wide halfway up

A very attenuate example, reminiscent of Asplenium onopteris

 
     
     
  Asplenium adiantum-nigrum

Photo Carl Farmer
23 Sep 2001 Suardal, Skye
 

 
  A somewhat variegated specimen  
     
     
  Asplenium adiantum-nigrum

Photo Carl Farmer
25 Sep 2001 Penifiler, Skye
 

 
  Underside showing sori  


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