This member of the Agavaceae* family was given this name by William Trelease, in 1902. It is found in north-eastern Mexico, growing in a well drained soil with some water and lots of sun. The stem can grow to fifteen centimetres in diameter, the entire plant to four centimetres in height. The flowers are white.
The genera name is from Yuca, the name in St. Domingo for a totally different plant. The species is named means 'stiff' or 'inflexible' for the leaves.

