Arboris Mysterius includes 19 short stories: man-eating trees, poisonous orchids, killer cacti, and lycanthrope-inducing blossoms are among the mysterious vegetation we meet in these tales, as the botanical kingdom shows its teeth. Stories include:
- The Giant Wistaria (1891, Charlotte P. Gilman)
- Kasper Craig (1892, Maud Howe)
- The Gold Plant (1895, George Griffith)
- The Story of the Grey House (1898, Kate and Hesketh Prichard)
- The Flower of Death (1916, A. V. Pankey)
- The Lure of the Lavender Trees (1917, Maryland Allen)
- The Warlock of Glororum (1919, Howard Pease)
- An Orchid of Asia: a Tale of the South Seas (1920, Edna Underwood)
- “Glued” (1921, H. De Vere Stacpoole)
- The Tree (1921, H. P. Lovecraft)
- Through the Crater’s Rim (1926, A. Hyatt Verrill)
- The Blood-Flower (1927, Seabury Quinn)
- The Devils of Po Sung (1927, Bassett Morgan)
- White Orchids (1927, Gordon Philip England)
- Vine Terror (1934, Howard Wandrei)
- The Devil Flower (1939, Harl Vincent)
- The Garden of Hell (1943, Leroy Yerxa)
- Cactus (1950, Mildred Johnson)
