Tripleurospermum maritimum (syn. Matricaria maritima<ref>Tripleurospermum maritimum (L.) W.D.J. Koch subsp. maritimum false mayweed, Plants Database, usda.gov</ref>) is a species of flowering plant in the aster family commonly known as false mayweed<ref>Template:PLANTS</ref> or sea mayweed. It is found in many coastal areas of Northern Europe, including Scandinavia and Iceland, often growing in sand or amongst beach pebbles.
Tripleurospermum maritimum is a herb which grows with prostrate to erect stems to a height of 60 cm.<ref>Clapham, A. R.; Tutin, T. G.; and Warburg, E. F.; 1968, Excursion Flora of the British Isles, Cambridge University Press, Template:ISBN</ref> As with many maritime plants, sea mayweed has fleshy leaves which help it to survive in the harsh salty environment. The leaves are divided into short segments. When crushed, they yield a sweet smell similar to that of its relative chamomile, though much fainter.
The daisy-like flowers usually appear between July and September and can reach up to 50 mm across. The stems of the plant are frequently tinged red towards the base.
Found around the coast in the uppershore and waste ground.<ref>Hackney, P. ed. 1992. Stewart and Corry's Flora of the North-east of Ireland. Institute of Irish Studies, The Queen's University of Belfast Template:ISBN</ref>