Contributions to botany
Australia's most prolific plant collector of the early nineteenth century, Cunningham had been sent to Australia to expand the collection at the King's Garden at Kew and he was given the title of "King's Collector for the Royal Garden at Kew". He was so successful that a hothouse originally built for specimens from Africa was renamed "Botany Bay House" because it became filled with Cunningham's specimens. Although his main role was to collect propagation material, his lasting legacy are his herbarium sheets which are thought by his biographer, Anthony Orchard, to exceed 20,000.
It is often thought that Cunningham published few papers on botany and in his obituary, John Lindley wrote, "How little he regarded posthumous fame is seen by the fewness of his published works, a brief sketch of the Flora of New Zealand being the only systematic account of his Botanical discoveries...". In fact, although he was effectively barred from publishing on botany whilst employed as "King's Collector", he nevertheless later published seven major papers, and 57 shorter papers on subjects including taxonomy, geology, physical geography and zoology. He was one of the first scientists to publish papers on botanical geography.
Cunningham was concerned that many of his discoveries sent to Kew were not published, allowing others, including William Baxter to be credited with their discovery. (Baxter had risked arrest and a possible flogging for undermining Cunningham's work by sending specimens to commercial interests.) When Cunningham returned to London,
he sent duplicates of his herbarium specimens to other botanists, including de Candolle, Schauer, William Jackson Hooker, Bentham, Lindley and others, who published his descriptions with acknowledgement to "A.Cunn.".