Agricultural production of Claviceps purpurea on rye is used to produce ergot alkaloids. In 1853 he introduced his views on the reproduction cycle of "Claviceps purpurea" (ergot). Ergoflavin was first isolated in pure form from "Claviceps purpurea" (ergot) in 1958. The oxacyclol alkaloid ergotamine from the fungus "Claviceps purpurea" was the first identified cyclol. Early scientists have observed "Claviceps purpurea" on other Poaceae as "Secale cereale". "Claviceps purpurea" is an ascomycetous fungus which grows on the seeds of purple moor grass. The most prominent member of this group is "Claviceps purpurea" ("rye ergot fungus").