苏木,又名苏枋、苏方木、窳木等,常绿小乔木,学名Caesalpinia sappan L.,属豆科云实属植物。其木材坚重,枝干可提取有价值的红色染料,根可提取黄色染料,干燥的心材可供药用,能解热清血,收敛祛痰。由于其在染色和药用等方面的作用,使我国历史上有相当长一段时间里都从国外引进苏木,苏木在我国古代海交史上有着不可忽视的 Hematoxylin, also known as Su Lian, Su Fang Mu, Alder, etc., evergreen small trees, scientific name Caesalpinia sappan L., belong to the genus Leguminosae. The wood is strong, the branches can be extracted valuable red dye, the root can extract yellow dye, dried heartwood for medicinal, can heat and blood, convergence expectorant. Due to its role in dyeing and medicinal use, so in our history for a long period of time have been introduced from abroad, Hematoxylin, Hemu in the history of ancient China’s maritime exchange can not be ignored