An oat (Avena sativa) that I sourced from the Irish Seed Savers. Ayr Bounty oats have been grown since 1937. According to the Agronomy Institute of Orkney College they were still being grown on a few farms in Orkney until very recently. It is a husked Spring sown variety.
Oats grow and ripen very easily in Ireland. I sow in rows at least wide enough to get a hoe through. Once they get going they will outcompete weeds and need no more attention until harvest.