Rabdosiella calycina or fly bush is an erect shrub in the Lamiaceae or mint family with branched stems that grow annually from a woody rootstock to a height of 1,5 m. The plant used to be called by several other names, including Plectranthus calycinus, a better known genus in the Lamiaceae family.
The leaves are unpleasantly scented, sometimes have stalks, sometimes not and are ovate or lanceolate with toothed or scalloped edges.
The panicles of cream flowers are sometimes touched with some pink or mauve on the tips and corollas are hairy. The flowers appear in summer through into winter. There are interesting cup-like bracts under each set of flowers on the stem.
These shrubs are found in summer rainfall grassland in the eastern parts of the country, from the Eastern Cape to Limpopo and also in Swaziland (Manning 2009; JSTOR).