Between 1862 and 1883 he collaborated with Joseph HOODER to publish Genera Plantarum, a world flora describing 7569 genera and 97000 species, which is considered his greatest achievement.
在1862年到1883年中,和约瑟夫.虎克(JosephHOOKER)合作出版了《》一书,表述了当时世界上的756997000种,这部著作被认为是大的成就。