Chrysanthemum L.

Greek chrysos — gold, anthemon — flower, as the capitula of many species are bright yellow.

Annual herbs. Stems erect or ascending, branched. Leaves along stems, alternate, margins toothed to divided, base often stem-clasping. Capitula radiate, terminal, solitary or in corymbs, with stalks. Involucral bracts in 2 or 3 rows, overlapping, unequal. Receptacle pitted, convex. Ray florets female, ligulate, yellow, sometimes white-tipped. Disk florets bisexual, tubular, yellow. Achenes cylindrical to 3-angled, often winged. Pappus absent.

One species has become a minor weed in urban areas.

Florets frequently yellow; achenes mostly 3-angled, sometimes winged, without a pappus.

2 species from Europe, Asia and N Africa.

Source: Jeanes, J. (2002). Asteraceae. 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.

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kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Asteranae
order      Asterales
family       Asteraceae
Higher taxa
Subordinate taxa
species         Chrysanthemum coronarium L.
species         Chrysanthemum ×morifolium Ramat
species         Chrysanthemum weyrichii