Flora and Fauna of the Universe

Professor Thripsted's Flora and Fauna of the Universe was a guidebook mentioned by the Fourth Doctor. It listed the Usurians as poisonous fungi. (TV: The Sun Makers ^[+]Robert Holmes, Doctor Who season 15 (BBC1, 1977).) As a youth, the First Doctor read an abridged version, edited for younger readers. (PROSE: Lungbarrow ^[+]Marc Platt, adapted from Lungbarrow, Virgin New Adventures (Virgin Books, 1997).)