Wood parenchyma was numerous, The raphides distributed in phloem parenchyma.There apptarad marked spiral thickening in the inner walls of the vessel,tube cell and lignification.Its...

• 木材为半环孔材,木薄壁细胞发达,韧薄壁组织中散生着针状结晶,导管、管胞和木纤维内壁明显螺纹加厚。