Coronidium rupicola, commonly known as the yellow button, is a flowering plant in the family Asteraceae. It is a small, upright, perennial shrub with yellow flowers borne on a single stem and is endemic to Queensland, Australia.
Description
Coronidium rupicola is a small, shrubby, erect perennial with a single stem and terminal yellow button flower-heads about in diameter. Unlike other species of Coronidium it doesn't have conspicuous, large bracts, instead a ring of smaller, narrow light-coloured bracts. The florets are thickly crowded with a greenish centre. The flowers in bud are thickly covered with long, whitish hairs, new growth stems silvery and woolly. The leaves are narrow, lanceolate, long, pale green, densely woolly underneath, upper surface smooth, margins rolled under and wavy. Flowering occurs throughout the year and the fruit is a cypsela.
Taxonomy and naming
This species was first described in 1838 by Augustin Pyramus de Candolle as Helichrysum rupicola. In 2008 Paul Graham Wilson changed the name to Coronidium rupicola and the description was published in the journal Nuytsia. The specific epithet (rupicola) means "rocky, cliff inhabitant".
Distribution and habitat
Yellow button is endemic to Queensland and grows on rocky coastlines, road verges, woodland and exposed ridges.
References
External links
View a map of historical sightings of this species at the Australasian Virtual Herbarium View observations of this species on iNaturalist View images of this species on Flickriver