Tripleurospermum Schultz-Bip.

Tripleurospermum is a genus with ca. 40 species in Eurasia with some species extending to North America and North Africa. It has often been included within Matricaria. It is distinguished from the latter by its 3-ribbed cypselas bearing two abaxial resinous glands (Bremer & Humphries 1993). Oberprieler (2001) showed that, despite the absence of receptacular scales, it is fact more closely related to Anthemis s.str. than it is to Matricaria. With, among others, Anthemis, Cota and Tanacetum it belongs to Anthemidinae, while Matricaria is a member of Matricariinae (Oberprieler & al. 2007). A single species with two subspecies (two distinct species according to many authors) is native in Belgium: Tripleurospermum maritimum (L.) Koch (Lambinon & Verloove 2012, sub Matricaria).

The presence of mature cypsela is often necessary for an accurate identification of species of Tripleurospermum. Even then, it remains a taxonomically complex genus.

1       Capitula disciforme, ligules absent or vestigial === Tripleurospermum decipiens

         Capitula radiate, with distinct white ligules (native) === T. maritimum


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Hamet-Ahti L. (1967) Tripleurospermum (Compositae) in the northern parts of Scandinavia, Finland and Russia. Acta Bot. Fenn. 75: 1-19.

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Skilbeck C.A., Lynch I., Ellenby M. & Spencer M.A. (2019) Achene Morphology of British and Irish Mayweeds and Chamomiles: implications for taxonomy and identification. British & Irish Botany 1(2): 128-166. [available online at:]

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith