Robert Thompson / Puss moth (Cerura vinula) on mossy branch, Clare Glen, Co. Armagh, Northern Ireland.

Roger Powell / Perenial Centaury (Centaurium sp) flowering in grassland, The Burren, Co. Clare, Ireland, July

Roger Powell / Biting Stonecrop (Sedum acre) flowering on sheltered limestone pavement, The Burren, Co. Clare, Ireland, July

Robert Thompson / Heath fragrant orchid {Gymnadenia conopsea var borealis} flowering in meadow, Lough Gealain, Burren, Co. Clare, Republic of Ireland, June

Robert Thompson / Heath fragrant orchid {Gymnadenia conopsea var borealis} Lough Gealain, Burren, Co. Clare, Republic of Ireland, June

Robert Thompson / Fly orchid {Ophrys insectifera} Burren, Co. Clare, Republic of Ireland, June

Robert Thompson / Early purple orchid {Orchis mascula} white form, Lough Gealain, Burren National Park, Co. Clare, Republic of Ireland, May

Robert Thompson / Early purple orchid {Orchis mascula} Burren, Co. Clare, Republic of Ireland, May

Robert Thompson / Dense-flowered orchid {Neotinea maculata} Lough Bunny Burren National Park, Co. Clare, Republic of Ireland, May

Adrian Davies / Sand dune reclamation, protection by fencing, The Burren, County Clare, Ireland

Adrian Davies / Drystone wall, The Burren, County Clare, Ireland

Adrian Davies / Limestone Pavement with flowering Primrose {Primula vulgaris}, The Burren, County Clare, Republic of Ireland

Adrian Davies / The Burren with flowering Blackthorn in gryke, County Clare, Republic of Ireland

Adrian Davies / The Burren, County Clare, Republic of Ireland, spring.

Adrian Davies / Limestone Pavement, The Burren, County Clare, Republic of Ireland

Adrian Davies / Limestone Pavement, The Burren, County Clare, Republic of Ireland

DAVID TIPLING / Panoramic view of Mullach Mor with limestone pavement Burren NP, Co Clare, Ireland

Tim Edwards / Sea aster {Tripolium pannonicum} growing in limestone fissure, The Burren NP, Co Clare, Eire

Tim Edwards / Limestone pavement at Burren NP, County Clare, Republic of Ireland

Tim Edwards / Pounabrone dolmen - stone-age tomb, Burren NP, County Clare, Republic of Ireland

DAVID TIPLING / Mullach mor limestone pavement Burren NP, Co Clare, Ireland

DAVID TIPLING / Mullach mor limestone pavement and turlough, The Burren, County Clare, Ireland / Eire

DAVID TIPLING / Mullach mor limestone pavement and turlough, Burren NP, Co Clare, Ireland

DAVID TIPLING / Limestone pavement, The Burren, Co Clare, Ireland

DAVID TIPLING / Hazel {Corylus avellana} growing in limestone pavement. Burren Co Clare Eire.

Tim Edwards / Limestone pavement, The Burren NP, County Clare, Republic of Ireland

Tim Edwards / Limestone pavement, The Burren, County Clare, Republic of Ireland

Tim Edwards / Sunset over cliffs of Moher, County Clare, Republic of Ireland

Marc Robillard / Low clouds cast shadows over waters off The Burren, north-west County Clare, Republic of Ireland