John Pilkington's picture

Maidenhair Spleenwort

Observed: 1st June 2013 By: John PilkingtonJohn Pilkington’s reputation in PlantsJohn Pilkington’s reputation in PlantsJohn Pilkington’s reputation in PlantsJohn Pilkington’s reputation in PlantsJohn Pilkington’s reputation in Plants
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Description:

Several plants found growing in cracks in old stone wall adjacent to Craig y Nos Castle

Identifications
Species interactions

No interactions present.

Species with which Maidenhair Spleenwort (Asplenium trichomanes) interacts

Comments

Chris Metherell's picture

Asplenium trichomanes

Interesting. This doesn't seem to be the common subsp. quadrivalens. Easy to identify as the pinnules are stalked at the basal corner. Rather thick stipes and rather crowded pinnules(but watch out in shady situations where things can be somewhat different).The subsp. is commonly found growing in the mortar on old walls - it likes lime. Subsp. trichomanes likes more acid environments and has pinnules with the stalk roughly in the centre, a more wiry stipe and much less crowded pinnules. Probably that. There is a subsp. pachyrachis, however that is rather rare - it has very dissected pinnules with an indistinct hyaline margin.

Chris Metherell
BSBI VC Recorder
North Northumberland