Burren, Co. Clare. Aughinish, Co. Limerick

Yellow-wort Blackstonia perfoliata Dréimire buí Family: Gentianaceae Flowering: June-September. Annual or biennial. Native. The branched clusters of bright yellow flowers with 6-8 petals and a deeply divided calyx are followed by globular seed-capsules. Leaves are greyish-green on erect glaucous stems, the stem-leaves triangular-oval and fused in pairs at the base. Height 15-40cm. Prefers calcareous ground with shallow, dry, stony soils that are often winter-wet. Can be locally frequent in some parts of Ireland on grassland, dunes, disturbed ground and on roadsides.

Yellow-wort, Blackstonia perfoliata, Dréimire buí