Dionysia aretioides 'Bevere' is a ball of sunshine. It looks like a saxifraga with its neat little cushion habit. I saw it when I visited the Royal Horticultural Society gardens at Harlow Carr earlier this month. It's an evergreen, full hardy, perennial. All the same, the RHS recommend growing it in an alpine house. I expect it isn't keen on getting rained on as it's susceptible to botrytis and needs good ventilation. It likes full sun and a very gritty, well-drained soil, with plenty of gravel around the base. It has greyish green leaves and the flowers are scented. Height 5-10cm (2-4in), spread 15-30cm (6-12in).