Irénée Thériot
He was orphaned as a child, trained as a teacher and became head of a school in Le Havre from 1888 until 1920. He married but his wife (died 1938) and son (died 1917, aged 30) pre-deceased him.He was a member of the Société Botanique de France. He was particularly interested in moss, which he studied in his spare time. He described over 1000 new species and genera. These came from many parts of the world, obtained by exchanging specimens with others. He continued to study mosses, including using a microscope, into his early 80s.
Thériot's personal herbarium collection is currently housed at the Muséum national d'histoire naturelle. Jules Cardot named the genus ''Theriotia'' in honor of Thériot.
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