Life … Plants Vascular Plants Dicots Nances, Willows, and Allies St. John's Worts and Allies St. John's-worts Hypericum Sect. Ascyreia Hooker's St. Johnswort species 76 observations Hooker's St. Johnswort Hypericum hookerianum Field notes Key traits Layer Shrubs Plant type Perennial Shrub From USDA PLANTS. Close