This member of the Burseraceae family was given this name by Asa Gray in 1861. It is found in the deserts of California, Arizona and Mexico, growing in grit or other well drained soil with little to some water and lots of sun. The stem can grow to 30 centimetres in diameter and four meters high. The flowers are greenish pale yellow. Named after: Joachim Burser, German/Danish botanist (1583-1639). The species name means 'small leaved'. I did see them on Baja California, but not with leaves.

