Fig. 15.3-10. Transverse section of wood of Persian acacia (Albizia julibrissin in the legume family, also called silk tree). The wood of this species shows two distinctive features:

            1. The vessels are solitary: all visible vessels (except two) are separated from the other vessels, they do not occur in clusters.

            2. The vessels are rather uniform in size, none being especially wider or narrower than the others.