Rachilla may have bristles , e.g. in setaria .

小穗轴有的有刚毛如狗尾草属。

Florets disarticulating from above downward , falling together with the rachilla joints .

脱节从在上面向下的小花，下降以及具关节的小穗轴。

A small , glabrous rachilla process is occasionally present ( the basis of var. sylvatica ) , but this is of no taxonomic significance .

突起一小，无毛的小穗轴是偶有宿存(变种的基部sylvatica)，但是这没有分类的意义。