To ensure the fertilization, their morphology is well adapted to the proboscis of Lepidoptera, especially Euphydryas, Melanargia, Melitaea, Pieris and Zygaena species.
Of these Marsh Fritillary (Euphydryas aurina), High Brown Fritillary (Argynnis cydippe), Wood White (Leptidea sinapis) and Brown Hairstreak (Thecla betulae) all have a local distribution in Somerset.