Cyanea undulata is an unbranched (or the stem is occasionally forked) short-lived perennial shrub or subshrub 1.8 to 3.6 m (5.9 to 11.8 ft) tall with narrowly elliptic leaves 28 to 36 cm (11 to 14 in) long and 3 to 5 cm (1.2 to 2 in) wide, with wavy margins, a smooth upper surface, and fine rust-...