Education
He studied natural sciences in Berlin as a pupil of Adolf Engler.
He studied natural sciences in Berlin as a pupil of Adolf Engler.
In 1902 travelled to South America in order to collect botanical and entomological specimens for European museums. In 1903-1904 he collected in Bolivia, followed by collection duties in Paraguay from 1904 to 1909. From 1910 to 1936 he was a professor of zoology and botany at Asunción University.
In 1934-1936 he was director of the Paraguayan Department of Agriculture until leaving Paraguay following the Chaco War.
He and his family returned to Germany, where he worked as a lecturer at the Ibero-Amerikanisches Institut in Berlin (1936–1945). In 1948 he returned to South America, where he worked as a botanist at the Instituto Miguel Lillo in Tucumán, Argentina.
The plant genus Fiebrigiella (family Fabaceae) was named in his honor by Hermann Harms (1908).