Hypoxis rigidula is a deciduous perennial herb growing annually from a fleshy rootstock. It is found in open grassland slopes of the summer rainfall regions of South Africa at altitudes up to 2300 m.
The long narrow leaves of around 1 m in length are flat and strongly ribbed. The hairy leaved variety is H. rigidula var. pilosissima, the nearly hairless one H. rigidula var. rigidula. The unbranched flower stalk bears a spike of fairly large yellow flowers (www.pacificbulbsociety.org; Lowry and Wright, 1987; Van Wyk and Malan, 1997).