1798: 178, loc. class. of Orobanche elatior Sutton, t. 17 ); " Barnack Hills and Holes (NNR) , (Nature Reserve [ Barnack , Cambridgeshire , East ]), 21st June 2010 ( photo by Urban Butterfly Garden 2010-2011; accessed, 6 June 2011) "; "Broughton & Whitwell, Limestone grassland verges with knapweed broomrape