Coronidium rupicola

Coronidium rupicola, commonly known as the yellow button,[1] 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.

Yellow button
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Coronidium
Species:
C. rupicola
Binomial name
Coronidium rupicola
Synonyms[3]

Homotypic

  • Helichrysum rupicola DC.

Heterotypic

  • Gnaphalium endeavourense Sch.Bip.
  • Gnaphalium rupicola Sch.Bip.
  • Helichrysum collinum DC.
  • Helichrysum rupicola var. danesii Domin

Description

Coronidium rupicola is a small, shrubby, erect perennial with a single stem and terminal yellow button flower-heads about 2 cm (0.79 in) 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, 5 cm (2.0 in) 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.[4]

Taxonomy and naming

This species was first described in 1838 by Augustin Pyramus de Candolle as Helichrysum rupicola.[5] In 2008 Paul Graham Wilson changed the name to Coronidium rupicola and the description was published in the journal Nuytsia.[6][7] The specific epithet (rupicola) means "rocky, cliff inhabitant".[8]

Distribution and habitat

Yellow button is endemic to Queensland and grows on rocky coastlines, road verges, woodland and exposed ridges.[4][6]

References
  1. "Species profile—Coronidium rupicola". Queensland Department of Environment and Science. Queensland Government. 2022. Retrieved 18 February 2023.
  2. "Coronidium rupicola". Australian Plant Name Index (APNI). Centre for Plant Biodiversity Research, Australian Government. Retrieved 18 February 2023.
  3. "Coronidium rupicola (DC.) Paul G.Wilson". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 18 February 2023.
  4. Schaumann, M.; Barker, J.; Grieg, J. (1987). Australian Daisies. Sydney: Lothian Publishing. p. 142. ISBN 0850912911.
  5. "Helichrysum rupicola". Australian Plant Name Index. Retrieved 13 June 2023.
  6. Wilson, P. (2008). "Coronidium rupicola". Nuytsia. 18: 306. Retrieved 13 June 2023.
  7. "Coronidium rupicola". Australian Plant Name Index. Retrieved 13 June 2023.
  8. George, A.S; Sharr, F.A (2021). Western Australian Plant Names and their meanings (4th ed.). Kardinya: Four Gables. p. 308. ISBN 9780958034197.


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