Contributes to the assembly of the acentrosomal spindle and phragmoplast microtubule arrays as part of the augmin complex. Part of the augmin complex composed of 8 subunits. The complex acts on microtubules and interacts with gamma-tubulin in spindles and the phragmoplast. No visible phenotype (PubMed:22505726). Belongs to the QWRF family. An article reported that this protein promotes microtubule reorientation in hypocotyls; however, this paper was later retracted.