Alfred Russel Wallace is generally presented as a footnote in scientific and cultural history, a young man whose letter spurred Darwin to publish his epoch-making On the Origin of Species, but little else. A spate of recent scholarly interest in him has, however, worked to recover his important and multifaceted place in British cultural history. This essay examines his positioning of himself as the standard bearer of Darwinian thought toward the end of his life and after much of Darwin’s scientific circle had died. His 1889 Darwinism subversively rewrites Darwin’s ideas and promotes what this article terms Wallaceism, a version of Darwinian evolutionary theory in which he positions himself as Darwin’s champion but also alters some of Darwin’s arguments in light of his own 1886–87 lecture tour of America. Analyzing public discourse on Wallace’s cultural reception from Anglo-American periodicals using both quantitative and qualitative methods, this essay comes to consider his rise to cultural prominence in the United States at the turn of the century and his subsequent fall.