1570-1638. English gardener and botanist, who travelled widely in Europe and may have introduced the cos lettuce to England from the Greek island bearing the same name. He was appointed gardener to Charles I and was succeeded by his son, John Tradescant the Younger (1608-1662), after his death. The younger Tradescant undertook three plant-collecting trips to Virginia, USA, and the Swedish botanist Carl Linnaeus named the genus Tradescantia in his honour. The Tradescants introduced many new plants to Britain, including the acacia, lilac, and occidental plane. Their collection of plants formed the nucleus of the Ashmolean Museum in Oxford.