Both Calyceraceae and Dipsacaceae have persistent calyces, but these become lignified or spiny in Calyceraceae, but are cup-shaped or consist of a circle of hairs in the Dipsacaceae.
The text describes the contrasting features of calyces within two plant families, Calyceraceae and Dipsacaceae. It highlights that while both have persistent calyx structures, they develop differently: Calyceraceae's become hardened and spiny, while Dipsacaceae's are cup-shaped or composed of a ring of hairs.