Othonna
''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 (those species that are geophytic with an aerial st ...
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