Ratibida Raf.


Derivation of name uncertain.

Biennial or perennial herbs, hairy. Stems erect. Leaves along stems, alternate, pinnate or divided. Capitula radiate, terminal, solitary, with long stalks. Involucral bracts in 2 rows, overlapping, unequal. Receptacle with scales, spherical to cylindrical. Ray florets female, ligulate, yellow and/or purple. Disk florets bisexual, tubular, yellowish or purplish. Achenes compressed, 4-angled or winged, often hairy. Pappus a crown, of 1 or 2 scales or absent.

Spherical or elongated receptacle; deciduous, incurved, velvety receptacle bracts.

7 species from North America.

Source: Lawson, L.; Spencer, R. (2002). Dahlia. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Asteranae
order      Asterales
family       Asteraceae
Higher taxa
Subordinate taxa