Uniquely identifiable characteristics

Distinguishing Feature : For a Broomrape: the blue flowers

No relation to : Turnip-rape (Brassica rapa ssp. oleifera) [plants with similar names belonging to differing families].

Yarrow Broomrape can suddenly reappear in the same location after decades of absence, perhaps because the seeds have lain dormant awaiting opportunity (maybe awaiting the return of the host plant, Yarrow, if it has gone) or that the plants can subsist below ground without flowering for several years.

See the pull-out table below for comparisons with other Broomrapes and all their identifying and delineating characteristics.

OROBANCHE (BROOMRAPE) COMPARISON TABLE (shrunk)