H the secondary floral axes give rise to tertiary ones, the raceme is branching, and forms a panicle, as in Yucca gloriosa.
If in a raceme the lower flowerstalks are developed more strongly than the upper, and thus all the flowers are nearly on a level, a corymb is formed,which may be simple, as in fig.
Thus we may have a group of racemes, arranged in a racemose manner on a common axis, forming a raceme of racemes or compound raceme, as in Astilbe.
Again, there may be a raceme of capitula, that is, a group of capitula disposed in a racemose manner, as in Petasites, a raceme of umbels, as in ivy, and so on, all the forms of inflorescence being indefinite in disposition.
The basal portion of the consecutive axes may become much thickened and arranged more or less in a straight line, ns and thus collectively form an apparent or false axis or sympodium, and the inflorescence thus simulates a raceme.