Rainer W. BussmannNarel Y. Paniagua-ZambranaGrace N. Njoroge2026-03-222026-03-22202010.1007/978-3-319-77086-4_147-1https://doi.org/10.1007/978-3-319-77086-4_147-1https://andeanlibrary.org/handle/123456789/82433enBiologyBotanyAsteraceaeSonchus asper (L.) Hill Sonchus oleraceus L. Asteraceaebook-chapter