This large member of the Geraniaceae family was given this name by Focke Albers in 1996. It is found in the south-western Namibia, growing in grit or other well drained soil with some water and lots of sun. The stem can grow to ten centimetres in diameter and two meters high. The flower are pale pink.
The genera is named for Lady Ann Monson, 18th century plant collector on the Cape of Good Hope and in Bengal. The species name after Dr. Hermann Wilhelm Rudolf Marloth, 1855-1931, a German botanist.

