Towards the end of the 19th century, led by the Nicaraguan Rubén Darío, modernism appears in Latin American literature. Preciosity of manner and a strong influence from Symbolism sum up the new genre, which inspires the clearest voice in poetry, Leopoldo Lugones, who was the author of the first Argentine science fiction story. The first truly modern generation in Argentine literature is the Martinfierristas (c. 1922). The movement contributes an intellectual doctrine in which a number of current trends come together: the trend represented by the Florida group, adscript to ultraísmo, with Oliverio Girondo, Jorge Luis Borges, Leopoldo Marechal and Macedonio Fernández; and the trend of Boedo, impressed by Russian realism, with Raúl González Tuñón, César Tiempo y Elías Catelnuovo. Ricardo Güiraldes, however, remains classical in style, giving a whole new freshness to "gauchesca" poetry and writing what is perhaps the novel, "Don Segundo Sombra".