Ixieae

Ixieae is a tribe of flowering plants in the family Iridaceae, commonly known as the iris family. The tribe is named after the genus Ixia, the best-known and historically defining genus. Circumscription of Ixieae has varied across classifications and phylogenetic studies; in modern treatments it is recognized as a distinct tribe within Iridaceae, with Ixia as the type genus and other related southern African genera sometimes included in the same grouping.

Description: Members of Ixieae are herbaceous perennials, often geophytic, growing from bulbs or corms. They typically have linear to sword-shaped leaves arranged in two ranks and produce showy inflorescences at the ends of flowering stems. The flowers bear six tepals and are frequently brightly colored, adapted to attract pollinators such as bees.

Distribution and habitat: Ixieae is primarily centered in southern Africa, especially the Cape Floristic Region of South Africa, with some species extending into neighboring countries. Natural habitats include open grassland, rocky slopes, and coastal scrub; many species prefer well-drained soils and seasonal rainfall patterns.

Cultivation and uses: Several genera in Ixieae are cultivated as ornamentals for garden borders and cut flowers, notably Ixia, which is widely grown for its vivid blooms. Gardeners typically grow them as summer-flowering bulbs or corms in temperate climates, requiring sunny sites, good drainage, and dry summer dormancy; in colder regions they may require lifting and winter protection.

Taxonomy: The classification of Ixieae has evolved with DNA-based phylogenetics. It remains a recognized tribe within the Iridaceae in many modern systems, though the exact composition of genera can vary between classifications.