Khaki bos – an invasive common weed introduced to South Africa by the British who imported horses and particularly their hay from the Antipodes (possibly New Zealand) which had the khaki bos (bos means bush in Afrikaans) sprigs and seeds within the hay bales. The ‘khaki’ reference came from the name given to the plant by the Boers during the Anglo-Boer War as that ‘fokken khaki bos’, khaki being the colour worn by the British troops eventually once they realised that wearing red coats in the African bush wasn’t conducive to survival during the War.
It is still a much maligned plant as it has killed off most of the indigenous bush veld in large tracts of Southern Africa [Rosendale Allotments, Herne Hill, London, May 2013].

Image: Wiki Commons.