Charles Isidore Douin (1858 – 1944) was a French bryologist who was a native of Bouville, Eure-et-Loir.
Georg Ernst Ludwig Hampe (July 5, 1795 – November 23, 1880) was a German pharmacist, botanist and bryologist who was a native of Fürstenberg.
During this period, he again started to become keenly interested in botany and spent time with Francesco Ambrosi, whoever he was, who introduced him to the bryologist Gustavo Venturi and the work of Carlo Vittadini.
Jean-Nicolas Boulay (11 June 1837, Vagney – 19 October 1905, Lille) was a French clergyman, bryologist and paleobotanist.
Johann Bernhard Wilhelm Lindenberg (September 18, 1781- June 6, 1851) was a German bryologist who worked as a lawyer in Bergedorf (today a burrough of Hamburg).
He married Elizabeth Gertrude Knight, a bryologist, on August 27, 1885.