Introduced plants

thumb|Rhododendron ponticum is an example of a species which recolonised central and northern Europe following the Ice Ages. An archaeophyte is a plant species which is non-native to a geographical region, but which was an introduced species in "ancient" times, rather than being a modern introduction. Those arriving after are called neophytes.

non-native plant species introduced in recent history

plants that are alien to the native flora

thumb|270px|poppy|Poppies are hemerochoric plants that belong to the [[archaeophytes.]] Hemerochory (Ancient Greek ἥμερος, hemeros: 'tame, ennobled, cultivated, cultivated' and Greek χωρίς choris: separate, isolated), or anthropochory, is the distribution of cultivated plants or their seeds and cuttings, consciously or unconsciously, by humans into an area that they could not colonize through their natural mechanisms of spread, but are able to maintain themselves without specific human help in their new habitat.