William Albert Setchell (April 15, 1864 – April 5, 1943) was an American botanist and marine phycologist who taught at the University of California, Berkeley, where he headed the Botany Department. Among his publications are the Phycotheca Boreali-Americana, a multi-volume specimen collection of dried algae, and the Algae of Northwestern America, a reference work. Source: Wikipedia (en)