Bordered pits on tracheids radial walls uni - seriate and bi - seriate rows 交叉场1 - 4枚杉木型纹孔。
Fibres with thin - to thick - walled , bordered pits distinct . axial parenchyma rare , diffuse and scanty paratracheal 轴向薄壁组织量少,星散状或疏环管状。
Fiber - tracheid an elongated cell with bordered pits found in wood , intermediate in form between a fiber and a tracheid 纤维管胞:木材中具有具缘纹孔的细长细胞,是纤维和管胞的中间类型。