The Arkellis flower was a flower native to Skaro. It had evolved to survive in the harsh irradiated environment of post-war Skaro, only taking root in metal. (PROSE: The Dalek Dictionary [+]Loading...["The Dalek Dictionary (feature)"], Dalek: The Astounding Untold History of the Greatest Enemies of the Universe [+]Loading...["Dalek: The Astounding Untold History of the Greatest Enemies of the Universe (short story)"])
The sap from this flower was used to infuse some Dalek casings. The first Dalek Emperor's casing was enhanced with Arkellis sap. (COMIC: Genesis of Evil [+]Loading...["Genesis of Evil (comic story)"]) The Cult of Skaro were also enhanced with Arkellis sap; by that time, the flower had become extinct. (PROSE: Birth of a Legend [+]Loading...["Birth of a Legend (short story)"])