Hesperomannia arbuscula, a member of the Asteraceae (sunflower) family, is a small shrubby tree, 2 to 3.3 m (7 to 11 ft) tall. Leaves are elliptic, generally 10 to 18 cm (4 to 7 in) long and 5.5 to 11.5 cm (2.2 to 4.5 in) wide, although leaves on juvenile plants can sometimes be larger. Flower heads are erect and arranged in clusters of four or five heads. Each head comprises many yellow to yellowish-brown florets. with a tube of fused petals 2.5 to 3 cm (0.9 to 1.2 in) long and a threadlike style extending beyond them. The fruit is a 0.8 to 1 cm (0.3 to 0.4 in) long achene. crowned by a ring of bristles nearly the same length as the petals. See the 5-year review for H. arborescens for taxonomic changes.