EVENTS

Members Reports and Photos

...

SATURDAY 22nd June 2013

FERN MEETING AT GLENDALOUGH 22nd JUNE 2013

LEADER: CATRIONA BRADY

A group of eight people overcame the showery weather, the midges and tourists and had a very enjoyable morning look at ferns on the acidic soils of Glendalough above the upper car park.

It was an ideal time to view ferns in a pristine state with some fronds still unfurling and others displaying the early stages of spore development. ‘Tougher’ ferns such as Pteridium aquilinum (Bracken) extended to the higher/more exposed slopes and others such as Dryopteris aemula (Hay-scented Buckler-fern) were in the more sheltered and warmer areas. The ferns seen included the Dryopteris affinis (Golden-scaled Male-fern) group with profuse golden scales on the rhachis (stem) and black ‘dots’ at the junction of branches with the stem; the tripinnate Dryopteris dilatata (Broad Buckler-fern) with the horseshoe shaped indusium (containing spores) underneath; the delicate Athyrium  filix-femina (Lady-fern); Oreopteris limbosperma (Lemon-scented Fern); and the dioecious Blechnum spicant (Hard-fern) with separate female and male fronds. Polypodium (Polypody)was present on oak as an epiphyte and Asplenium trichomanes (Maidenhair Spleenwort) and Asplenium adiantum-nigrum (Black Spleenwort) on the walls of the ruined church. The lime-loving Asplenium ruta-muraria (Wall-rue) was observed on the mortared wall at the entrance to the car park.
dn240613

 

Blechnum_spicant.JPG DNash   Dryopteris_affinis_scales.JPG  DNash   Dryopteris_dilatata_sori.JPG  DNash   Oreopteris_limbosperma_sori.JPG  DNash   

Polypodium.JPG DNash   Pteridium_aquilinum.JPG DNash

  return to outings