This member of the Amaryllidaceae family was given this name by Deidré Anne Snijman in 1989. It is found in the mountains near Vanrhynsdorp in mid-western South Africa, growing in a well drained soil with some water and lots of sun. The bulb can grow from one to two centimetres in diameter, the entire plant to 15 centimetres in height. The flowers are from pale to deep pink with a reddish centre - and non-scenting.
The name Hessea commemorates Christian Heinrich Friedrich Hesse, 1772–1837, a Lutheran minister who came to Cape Town from Hanover and grew succulents in his garden. The species name from Latin; Undosa; meaning 'wavy, undulary, undulatory' for the edges of the petals. This is a winter-grower. The fruits by Nich Helme, Inaturalist.ca.

