Porous wood is the dicotyledonous wood that contains abundant vessels. Porous wood can be ring porous or diffuse porous. In ring porous wood, vessels are very broad in the spring wood and are quite narrow in the autumn wood. This kind of wood is present in Dalbergia sissoo, Cassia fistula, etc. Ring porous wood is more advanced as it provides better translocation when the requirement of the plant is high.