Lobelia L.

Corolla blue, white, purple or pink Lobelia

Flowers in terminal usually ± unilateral racemes. Anthers all with bristles at the apex of the anther tube. Corolla dark blue

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Erect herbs. Leaves linear to ovate, deeply incised or dentate, tapering towards the base. Capsule oblique, subglobular

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Three anterior corolla lobes broad-obovate, c. 4 mm wide. Corolla 10–12 mm long. Flowers on slender pedicels. Stems often branched. Capsule c. 4 mm diam. Widespread. Open forests and heath. Ss. Fl. spring–summer Lobelia gracilis

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Three anterior corolla lobes oblong to narrow-oblong or narrow-obovate, up to 6 mm wide. Corolla 15–25 mm long. Stems simple to slightly branched. Capsule more than 5 mm diam