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）合出版了《植物属》一书，表述了当时世界上7569属97000种植物，这部著被认是他最伟大成就。