American botanist & bryologist (1885-1976).
Mary Agnes Stump Taylor (1885–1976) was an American bryologist who collected and identified many species of bryophytes across North America. Her collection of around 8,000 plants was so extensive that it has been used to identify the range of plants several decades after their original collection. The standard author abbreviation M.S.Taylor is used to indicate this person as the author when citing a botanical name.