Phleum exaratum Griseb. (syn.: P. graecum Boiss. et Heldr. subsp. graecum) (SE-Eur., W-As.) – A regular but always ephemeral grain alien, seen most years since 1994 (although recently decreasing). Recorded on unloading quays, waste ground near grain mills, railway yards, etc., mostly in Antwerpen, Gent and Roeselare. Formerly also recorded in Zeebrugge (1948) and as an exceptional wool alien in the valley of river Vesdre (Ensival, 1912). Easily mistaken for native Phleum arenarium and possibly under-recorded in port areas.
All Belgian collections examined belong with subsp. exaratum with glumes long-ciliate along keel.
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Selected literature:
Lambinon J., Delvosalle L., Duvigneaud J. (avec coll. Geerinck D., Lebeau J., Schumacker R. & Vannerom H. (2004) Nouvelle Flore de la Belgique, du Grand-Duché de Luxembourg, du Nord de la France et des Régions voisines (Ptéridophytes et Spermatophytes). Cinquième édition. Jardin botanique national de Belgique, Meise: CXXX + 1167 p.
Scholz H. (1990) Neue und wenig bekannte mediterrane Gramineen-Taxa. Willdenowia 19(2): 405-412.
Verloove F. & Vandenberghe C. (1995) Nieuwe en interessante voederadventieven voor de Belgische en Noordfranse flora, hoofdzakelijk in 1994. Dumortiera 61-62: 23-45.