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,他和约瑟夫.虎克(JosephHOOKER)合作出版《物》一书,表述当时世界上756997000种物,这部著作被认为是他最成就。