a trailing branch which is disposed to take root at the end or at the joints; a stole.-an extension of the integument of the body, or of the body wall, from which buds are developed, giving rise to new zooids, and thus forming a compound animal in which the zooids usually remain united by the stolons. such stolons are often present in anthozoa, hydroidea, bryozoa, and social ascidians. see illust. under scyphistoma.