1. Cladanthus mixtus (L.) Chevall. (syn.: Anthemis mixta L., Chamaemelum mixtum (L.) All., Ormenis mixta (L.) Dum.) (Medit., SW-Eur.) – A rather rare and probably decreasing, ephemeral alien. Formerly perhaps locally temporarily established, for instance between 1856 and 1860 in ‘s Gravenwezel (by roadsides). Most records are from the 19th and the beginning of the 20th century (Lambinon 1957). Records in the past decades are always associated with grain importation. Seen for instance in Turnhout in 1978 and more or less regularly observed (and sometimes in abundance) in the port areas of Antwerpen and Gent since 1997 (Verloove & Vandenberghe 1998). Cladanthus mixtus is now usually found on unloading quays or by railway tracks.
Cladanthus mixtus is readily distinguished: its ligules are whitish with a yellowish or orangish base and leaves are simply pinnatisect or merely serrate.
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Selected literature:
Lambinon J. (1957) Contribution à l’étude de la flore adventice de Belgique. I. adventices rares ou nouvelles pour la Belgique. Bull. Soc. Roy. Bot. Belg. 89: 85-100.
Verloove F. & Vandenberghe C. (1998) Nieuwe en interessante voederadventieven voor de Belgische flora, hoofdzakelijk in 1997. Dumortiera 72: 18-36.