Two hundred years after their gathering, the pioneering lichen collections made by Archibald Menzies between 1784 and 1802 during his career as a naval surgeon are recorded and discussed. The bulk of Menzies's lichens come from three major collection periods: the Halifax Station (Nova Scotia) of 1784–1786; his time as surgeon to James Colnett on the circumnavigation of thePrince of Wales(1786–1789); and his extensive tour as naturalist to Vancouver'sDiscoveryexpedition (1791–1795). Menzies's extra-European lichen collections were the most extensive ever made during the 18th century and contain many first discoveries and type collections: (1) Nova Scotia, 16 taxa in 11 genera, 1 type; (2) Staten Island, 32 taxa in 19 genera, 5 types; (3) west coast of North America, 83 taxa in 45 genera, 11 types; (4) Sumatra, 10 taxa in 7 genera; (5) Cape of Good Hope, 30 taxa in 23 genera; (6) New Zealand, 14 taxa in 6 genera; (7) Tahiti, 5 taxa in 4 genera; (8) Hawaii, 25 taxa in 13 genera; (9) St Helena, 10 taxa in 8 genera. Major repositories of Menzies lichens are the Royal Botanic Garden Edinburgh, the Linnean Society of London (James Edward Smith herbarium) and the Natural History Museum, London.