Bromus intermedius Guss. (Medit.) – An exceptional and ephemeral alien. Recorded only once on a dump in Berchem (Antwerpen) in 1952.
This collection was initially ascribed to Bromus scoparius. With this species it shares the papery, pubescent lemmas and curved-out awns at maturity. However, it is readily distinguished by the much less contracted inflorescence (with at least some spikelets on distinct branches), wider lemmas with angled margins, more hairy leaf sheaths, etc.