Nigel Cattlin / Knapweed broomrape (Orobanche elatior) flower spike in grassland. Disused chalk pit nature reserve, Berkshire, England, UK. June

Adrian Davies / Knapweed broomrape (Orobanche elatior), parasite on roots of Greater knapweed (Centaurea scabiosa). Hampshire, England, UK. June.

Nigel Cattlin / Knapweed broomrape (Orobanche elatior) flowers, parasite of Knapweed (Centaurea). Kent, England, UK.

Sue Daly / Ivy broomrape (Orobanche hederae), Alderney, British Channel Islands, May.

Alex Hyde / Slender broomrape (Orobanche gracilis) Nordtirol, Austrian Alps, July.

Paul Harcourt Davies / Thistle broomrape (Orobanche reticulata) a species parasitic upon various thistles and related plants. Preci, Umbria, Italy, June

Paul Harcourt Davies / Branched broomrape (Orobanche ramosa) parasitic plant, Preci, Umbria, Italy. June.

Paul Harcourt Davies / Thyme broomrape (Orobanche alba) parasitising common thyme ( Thymus vulgaris) near Santa Stefano in Sassania, Abruzzo, Italy, June.

Paul Harcourt Davies / Thyme broomrape (Orobanche alba) parasitising common thyme ( Thymus vulgaris) near Santa Stefano in Sassania, Abruzzo, Italy, June.

Paul Harcourt Davies / Slender broomrape (Orobanche gracilis) a plant parasitic upon legumes and characterised by shiny dark red within the flower. Precis. Umbria. Italy, June.

Paul Harcourt Davies / Thyme broomrape (Orobanche alba) parasitising common thyme ( Thymus vulgaris) near Santa Stefano in Sassania, Abruzzo, Italy, June.

Floris van Breugel / Cooper's broomrape (Orobanche cooperi) emerges from the sand. The broomrape is a parasite and has no leaves. Death Valley, California, USA. March.