knotgrass

名词 knotgrass:

1. low-growing weedy grass with spikelets along the leaf stems
   同义词：Paspalum distichum

knot.grass

n.（名词）
A low-growing, weedy grass(Paspalum distichum) with spikelets arranged in two rows along the rachis.
两耳草：一种小穗沿叶轴排成两行的低矮蔓生草（两耳草 雀稗属）
Any of several weedy plants of the genusPolygonum that have stems with nodes.
结节草：一种茎上长有节瘤的结节草 属蔓生植物