Neo-Impressionist painter who belonged to and co-founded Les XX, a group of young, radical artists. He is remembered for his later works, "Olive trees near Nice" and "Four Bathers."
He studied at the Academie Royale des Beaux-Arts, where he was heavily influenced by Belgian orientalist painter Jean-François Portaels. He was 18 when he was first included at the Salon of Ghent.
He was born into an upper-class French-speaking family. His brother Octave van Rysselberghe became a famed architect.
He painted one of his most famous works, a portrait of Alice Sèthe, in 1888. Sèthe was the wife of sculptor Paul Dubois.