Scientific name: Utricularia vulgaris L.
Common name: Greater Bladderwort
Description
Habit: A rootless aquatic, to 60 cm long.
Stems: Submerged, stout, bearing small and transparent bladders which act as traps for aquatic insects; bladders with very small 4-armed hairs inside, arms of two clearly different lengths; bladders borne on the base of the leaves.
Leaves: Submerged leaves finely divided into numerous, toothed, linear segments; teeth with a bristle-like point; leaves 25 mm long.
Flowers: Yellow, zygomorphic, 25 mm long, borne above water surface in a few-flowered racemes; calyx fused, deeply 2-lobed; corolla a 2-lipped tube, short and broad with a spur at the base, lower lip with a palate closing the mouth of the corolla tube and with downturned margins; stamens 2, attached to the corolla tube at the top.
Fruits: A many seeded capsule.
Habitat: Fens, ditches, drains.Distribution: Rare.
Native status: Native
Of conservation interest: No