Botanica Delira includes 21 additional classic short stories of unusual (and often deadly) plants, flowers, and fungi from science fiction and fantasy. In addition, 10 brief "wonder stories," or newspaper hoaxes involving mystery plants are included, illustrating the historical roots of this fictional subgenre. Stories include:
- Lost in a Pyramid, or the Mummy’s Curse (1869, Louisa May Alcott)
- The Man-Eating Tree (1875, Edmund Spencer)
- The Devil Tree (1883, Anonymous)
- Carnivorine (1889, Lucy H. Hooper)
- My One Gorilla (1890, Grant Allen)
- Lamparagua (1893, May Crommelin)
- The Flower of Death (1893, Flavel Scott Mines)
- The Man-Killing Tree of Ceylon (1893, Anonymous)
- The Death Plant of South Africa (1895, H. B. M. Buchanan)
- The Guardian of Mystery Island (1895, Edmond Nolcini)
- The Man-Trap Cactus (1895, Anonymous)
- A Flesh-Eating Plant (1901, Anonymous)
- The Gray Weed (1905, Owen Oliver)
- The Tale of the Scarlet Butterflies (1908, Beatrice Grimshaw)
- The Black Orchid (1910, Marjorie L. C. Pickthall)
- The Adventure of the Devil’s Foot (1910, Arthur Conan Doyle)
- Spores of Death (1913, Sax Rohmer)
- The Thunder Beast (1920, Joseph B. Ames)
- Orchid Death (1921, James Hanson)
- Drosera Cannibalis (trans. 1922, René Morot)
- The Malignant Flower (1927, Anthos)
