Leo Lesquereux (1806–89)

Swiss-born bryologist and palaeontologist. Moved to the United States in 1848; after brief periods assisting Louis Agassiz and Asa Gray, settled in Columbus, Ohio, where he assisted the bryologist William Starling Sullivant. Employed on geological surveys in the mid-western United States and Pennsylvania. Engaged by Agassiz to organise the palaeobotanical collections at the Museum of Comparative Zoology, Harvard University, 1867–72.