Senecio is a genus of flowering plants in the daisy family (Asteraceae) that includes ragworts and groundsels.
Senecioneae is the largest tribe of the Asteraceae, or the sunflower family, comprising over 150 genera and over 3,500 species. Almost one-third of the species in this tribe are placed in the genus Senecio. Its members exhibit probably the widest possible range of form to be found in the entire plant kingdom, and include annuals, minute creeping alpines, herbaceous and evergreen perennials, shrubs, climbers, succulents, trees, and semi-aquatic plants.
Othonna is a genus of approximately 90 species of succulent or subsucculent perennial herbs or shrubs, with its center of diversity in the Greater Cape Floristic Region (GCFR) of South Africa but some species' ranges include southern Namibia, Angola, and Zimbabwe. The genus was established by Linnaeus in 1753 containing 14 species, however, of those original species, only four are still retained in Othonna, while the others have been transferred to different genera including Cineraria, Euryops, Hertia, Ligularia, Senecio, and Tephroseris. The genus Othonnna is known to be monophyletic. In 2012, a new genus Crassothonna B. Nord. was erected with 13 species transferred from Othonna. A complete modern taxonomic treatment of the genus is being undertaken by the Compton Herbarium and the South African National Biodiversity Institute. The first part, a revision of the Othonnna bulbosa group, was published in 2019.
Calenduleae is a flowering plant tribe of the family Asteraceae. Calenduleae has been widely recognized since Alexandre de Cassini in the early 19th century. There are eight genera and over 110 species, mostly found in South Africa.
Tephroseris palustris, also known by its common names swamp ragwort, northern swamp groundsel, marsh fleabane, marsh fleawort, clustered marsh ragwort and mastodon flower, a herbaceous species of the family Asteraceae. It can be seen most easily when its bright yellow umbel flowers appear from May to early July standing 3 to 4 feet along marshes, stream banks and slough areas where it likes to grow.
Rune Bertil Nordenstam is a Swedish botanist and professor emeritus at the Swedish Museum of Natural History in the Department of Phanerogamic Botany. He has worked with Colchicaceae, Senecioneae and Calenduleae, was the editor of Compositae Newsletter newsletter since 1990, and is a Tribal Coordinator for The International Compositae Alliance with responsibility for the tribes Calenduleae and Senecioneae.
Elekmania is a genus of the tribe Senecioneae and the family Asteraceae.
Pieter B. Pelser is a lecturer in Plant Systematics and the curator of the herbarium at the University of Canterbury in Christchurch, New Zealand. One research interest is the evolutionary history of the tribe Senecioneae, one of the largest tribes in the largest family of flowering plants. He wrote the most recent attempt to define and delimit this tribe and its problematic founding species Senecio. He also studies insects that eat these plants (Longitarsus) which contain pyrrolizidine alkaloids and what makes them choose which plants they eat.
Caucasalia is a genus of flowering plants in the daisy family.
Dolichoglottis is a genus of flowering plants in the daisy family, Asteraceae.
Lasiocephalus is a genus of South American flowering plants in groundsel tribe within the sunflower family. The genus was shown to be part of Senecio and predominantly occurs in tropical alpine-like regions.
Nemosenecio is a genus of East Asian flowering plants in the groundsel tribe within the sunflower family.
Tephroseris is a genus of Eurasian and North American plants in the groundsel tribe within the daisy family.
Adenoglossa is a genus of flowering plants in the daisy family described as a genus in 1976. There is only one known species, Adenoglossa decurrens, endemic to the Cape Provinces of South Africa.
Hilliardia is a monotypic genus of South African flowering plants in the daisy family. It only contains one known species, Hilliardia zuurbergensis(Oliv.) B.Nord.
Jacmaia is a genus of flowering plants in the daisy family. This generic name is an anagram derived from Jamaica.
Capelio is a genus of flowering plant in the Asteraceae first described as a genus in 1836 with the name Alciope. It was renamed Capelio in 2002 after it was determined that the name Alciope was not legitimately published according to international nomenclatural rules. Capelio is a taxonomic anagram derived from the former name Alciope.
Tephroseris integrifolia is a species of flowering plant belonging to the family Asteraceae.
Zemisia is a genus of flowering plants belonging to the family Asteraceae. The genus was circumscribed by Rune Bertil Nordenstam in Compositae News Lett. vol.44 on page 72 in 2006.
Oldfeltia is a genus of flowering plants belonging to the family Asteraceae. It contains only one known species, Oldfeltia polyphlebia.
