[f. TASSEL sb.1 + BUSH sb.1] The common name in America of an evergreen shrub, Garrya elliptica, a native of California, Mexico, Cuba, and Jamaica: so called from its elegant long drooping catkins.
1891. in Cent. Dict.
1900. Field, 22 Dec., 972/1. The Tassel Bush is an evergreen bush from California, the tip of every young growth being now laden with clusters, or bunches of soft-grey tassels or catkins, that give to it a very distinct and ornate appearance.