Upwards of 20 fly orchids (Ophrys insectifera) were observed on a South Downs chalk grassland hill, flowering from mid-May in dappled chalk woodland margins. The labellum petal is folded to give a volumetric illusion, with a central iridescent blue patch mimicking the sheen of folded wings; the species is pollinated by the digger wasp, a rarity in the Ophrys genus, which is mostly bee-pollinated. Charles Darwin studied a Kent population for years without witnessing pollination, and fertilization rates remain alarmingly low. It is the fifth Country diary entry published this month.
It is the fifth Country diary entry published this month.