Best time to see: mid May to mid Aug
Key facts
A grassland plant with hooded, yellow flowers that is a semi-parasite on grasses
So named because its seeds rattle inside a papery capsule when ripe
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© Owen Keen
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© Tom Lee
A grassland plant with hooded, yellow flowers that is a semi-parasite on grasses
So named because its seeds rattle inside a papery capsule when ripe