Coronidium rupicola
| Yellow button | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Coronidium |
| Species: | C. rupicola |
| Binomial name | |
| Coronidium rupicola | |
| Synonyms[2] | |
Coronidium rupicola, commonly known as yellow button,[3] is a species of flowering plant in the family Asteraceae and is endemic to Queensland, Australia. It is a small, upright, perennial herb with lance-shaped stem leaves, heads of yellow flowers with bronze-coloured bracts, and cylindrical to oblong cypselas with thread-like pappus bristles.
Description
Coronidium rupicola is a small, shrubby, erect perennial herb 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 bronze-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 cylindrical to oblong cypsela with thread-like pappus bristles.[3][4][5]
Taxonomy
This species was first described in 1838 by Augustin Pyramus de Candolle who gave it the name Helichrysum rupicola in his Prodromus Systematis Naturalis Regni Vegetabilis.[6][7] In 2008, Paul Graham Wilson transferred the species to Coronidium as C. rupicola in the journal Nuytsia.[8][4] The specific epithet (rupicola) is derived from the Latin words rūpēs meaning "cliff", and -cola meaning "to inhabit", and is a reference to the habitat where this species is found.[9]
Distribution and habitat
Yellow button is endemic to Queensland and grows on rocky coastlines, road verges, woodland and exposed ridges.[3]
Conservation status
Coronidium rupicola is listed as of "least concern" under the Queensland Government Nature Conservation Act 1992.[1]
References
- 1 2 "Species profile—Coronidium rupicola". Queensland Department of Environment and Science. Queensland Government. 2022. Retrieved 18 February 2023.
- 1 2 "Coronidium rupicola". Australian Plant Census. Retrieved 14 April 2026.
- 1 2 3 Schaumann, Maureen; Barker, Judy; Greig, Joy (1988). Australian Daisies for Gardens and Floral Art. Melbourne: Lothian Publishing Co. p. 142. ISBN 0850912911.
- 1 2 Wilson, Paul G. (2008). "Coronidium, a new Australian genus in the Gnaphalieae (Asteraceae)". Nuytsia. 18: 306. Retrieved 15 April 2026.
- ↑ Collins, Timothy L. Kodela, Philip G. (ed.). "Coronidium rupicola". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 15 April 2026.
- ↑ "Helichrysum rupicola". Australian Plant Name Index. Retrieved 13 June 2023.
- ↑ de Candolle, Augustin P. (1838). Prodromus systematis naturalis regni vegetabilis. Paris: Sumptibus Sociorum Treuttel et Würtz. p. 190. Retrieved 15 April 2026.
- ↑ "Coronidium rupicola". Australian Plant Name Index. Retrieved 15 April 2026.
- ↑ George, A.S; Sharr, F.A (2021). Western Australian Plant Names and their meanings (4th ed.). Kardinya: Four Gables. p. 308. ISBN 9780958034197.
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