Subspecies, varieties, forms and cultivars of plants belonging to the Orbea carnosa group

• Orbea carnosa (Stent) Bruyns: corolla 6-10 mm in diameter pollinia smaller.
• Orbea carnosa subs. keithii (R.A.Dyer) Bruyns: corolla 10-20 mm in diameter pollinia broader. Distribution: Zimbabwe, South Africa, Mozambique, Swaziland and Botswana.
• Pachycymbium lancasteri Lavranos: is a yellow-flowered form of O. carnosa subs. keithii. Distribution: refers to a collection made north of the Letaba River in Northern Province, South Africa.