Appearance
It is a short-lived herbaceous perennial or biennial growing to 12–30 cm tall by 15 cm wide, with hairy leaves and a profusion of disc-shaped, intensely blue flowers in Spring.Stace describes this plant as having the following characteristics:
⤷ Upright, to 50 cm; softly hairy, with hairs at more-or-less right-angles to the main stem.
⤷ Flowers grey-blue, to 8mm across, flat in profile; sepal tube with hooked hairs; April–July.
⤷ Mature fruit dark brown, shiny.
⤷ Mature calyx on spreading stalks longer than sepal tube; calyx teeth spreading to expose the ripe fruit.
⤷ Basal leaves stalked, in a rosette; upper leaves not stalked.
⤷ Generally found in woods, scree and rock ledges; common throughout the British Isles.
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