Eryngium L.

Leaves and bracts pungent pointed. Flowers in dense heads or short cylindrical spikes Eryngium

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Plants 1–2 m high. Basal leaves linear, c. 1 m long; margins with distinct fine prickles. Heads (umbels) in a tall cymo-panicle. Coast. Margins of watercourses. Introd. from S. America. Fl. summer–autumn Eryngium pandanifolium

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Plants less than 1 m high