what does Nymphaea and Bupleurum have in common?
Bupleurum Bupleurum is a large genus of annual or perennial herbs or woody shrubs, with about one hundred and ninety species, belonging to the Apiaceae family. The full size of its species may vary between a few cm to up to 3 m high. Their compound umbels of small flowers are adorned with bracteoles that are sometimes large and may play a role in attracting pollinators. Rare among Apiaceae are the simple leaves, bracts (if present) and bracteoles. The genus is almost exclusively native in the Old World Northern Hemisphere, with one species native to North America and one species native to southern Africa.
Pierre Chrétien Pierre Chrétien (1846 – 15 June 1934, Nay, Pyrénées-Atlantiques) was a French entomologist who specialised in Lepidoptera. He was a Member of Société entomologique de France."Trifurcula chretieni" Z. & A. Lastuvka & van Nieukerken, 2013 is "named in honour of Pierre Chrétien (1846–1934), who discovered nepticulid mines on Bupleurum, including those on "Bupleurum rigidum", and the first author to describe a number of Mediterranean species that are now placed in "Trifurcula" ("Glaucolepis")."