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研究了云南西部龙陵县上新世的化石木 ,鉴定出两种木材类型。杜鹃花科杜鹃属的似腋花杜鹃Rhododendroncf racemosumFranchet,其主要木材特征有散孔材 ,生长轮略明显 ,导管具多角形轮廓 ,螺纹加厚出现在整个导管壁上 ,梯状穿孔板 ,射线异形II型。松科华山松PinusarmandiiFranchet的主要特征有交叉场纹孔窗格状 ,具正常轴向和纵向树脂道 ,且泌脂细胞壁薄 ,射线管胞内壁平滑或具稀疏的微锯齿。两种类型的化石木在我国均属首次报道。根据化石木结构和现代相应树种和植被的生境范围 ,当时植物生长于亚热带温凉湿润的山地环境 ,其海拔大约在 1 80 0m左右
Studied the Pliocene fossil wood in Longling County, western Yunnan, and identified two types of wood. Rhododendron Rhododendron is like rhododendron Rhododendroncf racemosumFranchet, the main wood features are diffuse porous wood, the growth of the wheel is slightly obvious, the catheter with a polygonal profile, thickened thread appears in the entire catheter wall, ladder-shaped perforated plate, Type II. Pinus armandii PinusarmandiiFranchet main features are cross-field pattern hole panes, with normal axial and longitudinal resin track, and the thin-walled lipid cell wall, ray tube cell wall smooth or sparse micro-serrated. Two types of fossil wood are the first reported in our country. According to the range of fossil wood structure and the corresponding habitat of modern tree species and vegetation, the plant was grown in a cool, humid and humid mountainous subtropical environment with an altitude of about 180 m