Gnidia is a genus belonging to the Thymelaeaceae family. It was named after the classical Greek port of Knidos, today the Turkish city of Cumali. Lasiosiphon is a discarded category in which some Gnidia species used to be classified; some believe that there is justifcation for re-introducing it.
Gnidia plants are usually shrubs. The flowers appear in short spikes or singly, surrounded by modified, involucral leaves. The flowers are mostly yellow or white with a long thin calyx tube at the base. South Africa has about 100 species of Gnidia.