Senna multiglandulosa is a shrub that typically grows to a height of up to 4 m (13 ft) and has woolly-hairy stems.

The flowers are yellow and arranged on the ends of branchlets and in upper leaf axils in groups of ten to twenty on a peduncle 20–30 mm (0.79–1.18 in) long, each flower on a pedicel 10–12 mm (0.39–0.47 in) long.

[4][5][6] This species was first formally described in 1783 by Nikolaus Joseph von Jacquin, who gave it the name Cassia multiglandulosa in his Icones Plantarum Rariorum.

[7][8] In 1982, Howard Samuel Irwin and Rupert Charles Barneby transferred the species to the genus Senna as S. multiglandulosa in Memoirs of the New York Botanical Garden.

[1] Senna multiglandulosa is native to Central and South America, but has been introduced to Australia, New Zealand and New Caledonia.