Examples from the Web for flower cluster
A flower-cluster in which the flowers are borne along the flower-stalk on pedicels of nearly equal length.
The flower-cluster is mixed with many bracts and the stems often branch very symmetrically, with clusters at the tips.
A peduncle on which a flower-cluster is raised is a Common peduncle.The Elements of Botany|Asa Gray
The scars on the stem are of three kinds, leaf, bud-scale, and flower-cluster scars.Outlines of Lessons in Botany, Part I; From Seed to Leaf|Jane H. Newell
Only a small part of the flower-cluster is given in the picture.