<span>The grapefruit (Citrus × paradisi) is a subtropical citrus tree known for its relatively large sour to semi-sweet, somewhat bitter fruit. Grapefruit is a citrus hybrid originating in Barbados as an accidental cross between two introduced species – sweet orange (C. sinensis), and pomelo (or shaddock) (C. maxima) – both of which were introduced from Asia in the seventeenth century.</span><br>