How to write 芏

芏 [dù] 1. Refers to a type of plant, specifically "江芏" (jiāngdù). It is a perennial herb belonging to the sedge family, widely distributed in tropical regions of Asia, Africa, and Oceania, as well as in the southern coastal provinces of continental areas. The leaves are short, and the sheaths are long. It grows in coastal areas or low-lying wetlands and is an excellent variety for improving saline-alkaline land. The fibers from its stems can be used for paper-making and weaving mats. It is also known as "芏草" (dùcǎo) and "咸水草" (xiánshuǐcǎo). 1. 植物名。即江芏。莎草科，多年生草本。分布于亚、非、大洋洲的热带地区，及大陆地区南部沿海各省。叶片短少，叶鞘长。生于海边或沼泽低洼地，是改良盐咸地的优良品种。其茎的纤维可制纸、织席。也称为「芏草」、「咸水草」。