Gereon Janzing, geobotánico y etnobotánico
Gereon Janzing, geobotánico y etnobotánico

Neophytes and archaeophytes

Bidens subalternans, a neophyte from South America (photo: on Ibiza)

Plants that have been introduced into an area, are separated into archaeophytes and neophytes, the former having come before the establishment of the trans-Atlantic contacts around the year 1500, the latter after that date.

Archaeophytes are usually considered an enrichment of the flora. About neophytes there are often very emotional arguments whether some of them, the so-called "aggressive" or "invasive neophytes", are a threat to the indigenous flora. Most neophytes however do not play an invasive role and cannot compete against native plants.

On Ibiza the best-known invasive neophyte is the African wood-sorrel, a native of South Africa. The poppies are archaeophytes, which came with the growth of cereals.

French: néophytes / archéophytes