Eighteenth Century (1961), Stearn provides some insight into his interpretation of botanical history: The progress of botany, as of other sciences, comes from the interaction of so many factors that undue emphasis on any one can give a very distorted impression of the whole, but certainly among the most important of these for any given period are the prevailing ideas and intellectual attitudes, the assumptions and stimuli of the time, for often upon them depends the extent to which a particular study attracts an unbroken succession of men of industry and originality intent on building a system of knowledge and communicating it successfully to others of like mind. Linnaeus Stearn's historical research is best known for his work on Carl Linnaeus (1707–1778), which he began while at the Natural History Museum, and which won him a number of awards at home and abroad. Between 1953 and 1994 he produced more than 20 works describing Linnaeus' life and work. Of Stearn's writings on Linnaeus, the most well known is his edition of the 1753 Species plantarum, published in facsimile by the Ray Society in 1957, for which he wrote both a 176-page introduction and an appendix. Concerned that Linnaeus' methods were imperfectly understood by his contemporaries, Stearn wrote that his introduction "provided concisely all the information about his Linnaeus' life, herbaria, publications, methodology etc. which a botanical taxonomist needs to know". The Times stated that no other botanist possessed the historical knowledge and linguistic skills to write, what is considered one of the classic studies of the Swedish naturalist and a highpoint of 20th century botanical scholarship. Subsequently, Stearn became a recognised authority on Linnaeus. Stearn produced similar introductions to a number of other editions of Linnaeus' works, including Genera Plantarum, Mantissa plantarum and . Later, he would produce a bicentenary guide to Linnaeus (1978) for the Linnean Society. Although Stearn spent much of his life studying and writing about Linnaeus, he did not admire the man's character, describing him as mean—"a jealous egoist, with a driving ambition". When asked which botanists in history he did admire, he cited John Lindley, Carolus Clusius (1526–1609) and Olof Swartz (1760–1818). Botanical taxonomy Stearn made major contributions to plant taxonomy and its history. In 1950 the Seventh International Botanical Congress was held in Stockholm, and the RHS would have been represented by Chittenden, but he had been taken ill. Bowles then arranged for Stearn