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Genus Gymnocoronis Family Asteraceae

Description: Erect or floating glabrous herbs with stems ribbed at the base.

Leaves opposite, toothed, petiolate.

Inflorescence terminal, heads in dense corymbs; heads hemispherical; involucral bracts numerous, leaf-like, in 1 or 2 series, obtuse to acuminate, ± fused; receptacle naked, convex, reticulate. Ray florets absent. Disc florets bisexual, tubular, 5-toothed, the lobes shortly fused. Anthers obtuse at base. Style branches elongate, with clavate appendages.

Achenes compressed dorsally, 5-angled, papillose, glabrous; pappus absent.


Distribution and occurrence: World: c. 5 species, Mexico & subtropical South America. Australia: 1 species (naturalized).

Text by M. F. Porteners
Taxon concept:

One species in NSW: Gymnocoronis spilanthoides

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