Cephalaria is a genus of flowering plants in the family Caprifoliaceae (order Dipsacales), encompassing approximately 102 accepted species of annual and perennial herbs. Plants typically reach 0.8 to 2 metres in height, bearing opposite leaves and rounded, pincushion-like flower heads reminiscent of those of the closely related genus Scabiosa — a resemblance reflected in the common name "giant scabious" sometimes applied to the group's most cultivated member.
The genus is distributed across a wide arc from southern Europe through western and central Asia to northern and southern Africa, with its centre of diversity in the Mediterranean and Middle East regions. The species vary from compact annuals of stony slopes to robust perennials of meadows and open woodland edges.
Ecologically, Cephalaria species serve as larval food plants for certain Lepidoptera. The moth Schinia imperialis feeds exclusively on Cephalaria procera, illustrating the genus's role in supporting specialist invertebrate communities.
In cultivation the genus is best known through Cephalaria gigantea (giant yellow scabious), a long-lived perennial native to the Caucasus. Growing to 2 metres, it produces stiff, branching stems clothed in dark green pinnate foliage and carries pale sulphur-yellow flower heads on tall wiry stalks through midsummer — a combination prized by garden designers for its naturalistic, see-through effect in mixed borders and prairie-style plantings.
Etymology
The name Cephalaria derives from the Greek kephalē (κεφαλή), meaning "head," referring to the dense, rounded flower heads characteristic of the genus — a morphological feature shared with related genera in the family Caprifoliaceae.
Distribution
Cephalaria is native to southern Europe, western and central Asia, and northern and southern Africa, with its greatest diversity in the Mediterranean basin and the Middle East. Individual species occupy a range of habitats from montane grasslands and rocky slopes to lowland meadows and scrub.
Ecology
Cephalaria species provide larval food resources for specialist moths; Schinia imperialis feeds exclusively on Cephalaria procera. The large, pincushion flower heads also attract generalist pollinators including bees and hoverflies.
Cultivation
The genus is valued in ornamental horticulture primarily through Cephalaria gigantea (giant scabious), a Caucasian perennial reaching 2 m that produces pale yellow flower heads on tall, airy stems in midsummer. It is suited to full sun and well-drained soil, performing well in mixed borders and naturalistic plantings. Several other species, including Cephalaria alpina, are also occasionally grown as garden perennials.
Taxonomy Notes
GBIF places Cephalaria in family Dipsacaceae (order Dipsacales), while other sources list the family as Caprifoliaceae. This reflects an ongoing taxonomic reclassification: Dipsacaceae is now widely treated as a subfamily (Dipsacoideae) within the broader Caprifoliaceae sensu APG IV. Both treatments refer to the same clade; the discrepancy is nomenclatural rather than phylogenetic.
