Pyracantha crenatoserrata is a species of Firethorn. By 1961 she was formally initiating others, including Ramfis S. Firethorn. Sarah Micklem is the author of the best-selling fantasy novel, "Firethorn". Pyracantha atalantioides (common names&colon; Gigg's firethorn and Sichuan firethorn) is a species of Firethorn shrub. The first PROGRAM release was "Firethorn / Pandorum" by Frankee. She wrote "Firethorn" while working as the art director for the magazine.