Song Gang (scientific name: Baeke Africa L.), also known as broom, broom branch, broom wood, pine branch, snake cordyceps, chicken pine, fragrant wood, Guanyin broom, etc. Small evergreen trees or shrubs belonging to Myrtaceae and Song Gang. Up to 3 meters, with many branches, grayish brown bark, strip peeling and hairless whole plant; Leaves opposite, sessile or short-stalked, erect or obliquely spreading, linear or linear conical, yellow-green, fragrant when rubbed; The flowers are small, yellow-white, with solitary axils, bell-shaped calyx tube, 5 petals, nearly round, separated, stamens (8) 10, opposite to calyx teeth in pairs; Shorter than petals; Capsule length 1-2 mm, seeds flat and angular. The flowering period is July-August, and the fruiting period is September-165438+1October.