Knapweed broomrape (Orobanche elatior), a parasite on knapweed as the name implies.

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Photo credit: © David Sewell / Alamy / Afripics
License: Licensed
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Keywords: broomrape, elatior, flower, gb, hampshire, hants, hill, knapweed, noar, orobanche, parasite, perennial, plant, selborne, uk