Unlike many members of the genus, A. schottii is a shrub rather than a vine, growing to 1.5 to 3 m (5–10 ft) tall and around 2 m (6–8 ft) wide. The elliptic to obovate leaves are arranged in whorls of 3–5 or are subopposite along the stem, and measure 2–14 cm long and 1.1–4 cm wide. The large yellow flowers are terminal (i.e. appearing at the ends of branches), and can appear year-round but predominantly in spring.
The spiny fruits appear mostly in summer