Plinio Nomellini is the protagonist with Alfredo Müller and others, of a real split from the Macchiaiolo group from the school of origin, which arouse reactions and anathemas from Giovanni Fattori launched at the young and rebellious artists, including Nomellini, one of his students favorites. An der ligurischen Küste (On the Ligurian coast), a painting from 1891 represents the crucial stage of Nomellini's research. Very airy landscape, remembered as his first divisionist painting - and certainly pointillism - is organized through a rather orderly sequence of horizontal planes, reproduces the sunny view of a belvedere over the sea. The pivot of the composition is a young woman with a guitar, leaning on the parapet beyond which the vast coastal panorama opens up, the low wall in full sunlight shimmering with yellows and blues stands out in an exuberant play of complementary elements, between a close-up lit by dense punctuation that it alternates between blue, violet and ochre, and a more compact and material background in which the full-bodied cobalt stripe of the sea meets the transcolor coast in the sky animated by thick brushstrokes. An intuitive divisionism, that of Nomellini, a vital and emotional en plein air vision, a dazzling luminosity of extraordinary chromatic ignition with expressive results.