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对大戟科的油桐［Ｖｅｒｎｉｃｉａｆｏｒｄｉｉ（Ｈｅｒｎｓｌ）ＡｉｒｙＳｈａｗ］。千年桐［ＶｅｒｎｉｃｉａｍｏｎｔａｎａＬｉｏｕｒ．］和石栗［Ａｌｅｕｒｉｉｓｍｏｌｕｃｃａｎａ（Ｌ）Ｗｉｌｌｄ．］的木材进行了比较解剖学研究。油桐和千年桐生长轮明显，半环孔材，轴向薄壁细胞呈星散分布。大多数射线是单列射线，少数是双列或三列射线，绝大多数射线为异型Ⅲ；石栗的生长轮略明显，散孔材，轴向薄壁细胞呈星散－星散聚合分布。大多数射线是双列射线，少数是单列射线，绝大多数射线为异型Ⅰ，晶体只分布在轴向薄壁细胞中。油桐、千年桐和石栗在单孔率和管间纹孔等的数量特征上存在着差异。但在导管频率、导管分子长度、纤维长度等数量特征又表现出相似性。根据这３种大戟科植物的木材解剖学特征讨论了油桐属和石栗属的分类地位问题。
The Euphorbiaceae tung tree [Verniciafordii (Hernsl) AiryShaw]. Millennium Tong [VerniciamontanaLiour. ] And Shiuri [Aleuriismoluccana (L) Willd. ] Of the wood were comparative anatomical study. Tung oil tree and Millennium Tong obvious growth, semi-circular pore, axial parenchyma cells were scattered. Most of the radiation is a single ray, a few are double or triple ray, the vast majority of radiation is shaped Ⅲ; sturgeon growth ring slightly obvious, scattered porous material, axial parenchyma cells were scattered - scattered aggregation distribution. Most of the rays are double ray, a few are single rays, the vast majority of radiation is shaped Ⅰ, the crystal is only distributed in the axial parenchyma cells. Tung, millet and stone chestnut in the single hole rate and the amount of pits and other characteristics of the number of differences. But in the catheter frequency, the length of the catheter, fiber length and other quantitative features again showed similarities. Based on the anatomical characteristics of wood from these three Euphorbia species, the taxonomic status of the genus