Calothamnus oldfieldii

Calothamnus oldfieldii is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small, spreading shrub with needle-shaped leaves and clusters of red flowers with 5 petals and 5 stamen bundles. (In 2014 Craven, Edwards and Cowley proposed that the species be renamed Melaleuca augusti-oldfieldii.)[2]

Calothamnus oldfieldii
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Calothamnus
C. oldfieldii
Binomial name
Calothamnus oldfieldii

Melaleuca augusti-oldfieldii Craven & R.D.Edwards


Calothamnus oldfieldii is a small shrub growing to a height of about 1.5 metres (5 ft). Its leaves are 25–50 millimetres (1–2 in) long and nearly circular in cross section and taper to a pointed end.[3][4]

The flowers are bright red and arranged in small groups and the stamens are arranged in 5 claw-like bundles. Flowering occurs from July to November and is followed by fruits which are woody capsules about 5 millimetres (0.2 in) long.[3][4]

Taxonomy and namingEdit

Calothamnus oldfieldii was first formally described by Victorian Government Botanist Ferdinand von Mueller in 1862 in Volume 3, Part 21 of Fragmenta Phytographiae Australiae.[1][5] The specific epithet (oldfieldii) honours Augustus Frederick Oldfield, an English botanist and plant collector.

Distribution and habitatEdit

Calothamnus oldfieldii occurs in the Carnarvon, Geraldton Sandplains and Yalgoo biogeographic regions[4] where it grows in sandy kwongan.[3][6]


Calothamnus oldfieldii is classified as "not threatened" by the Western Australian government department of parks and wildlife.[4]


  1. ^ a b "Calothamnus oldfieldii". APNI. Retrieved 31 July 2015.
  2. ^ Craven, Lyn A.; Edwards, Robert D.; Cowley, Kirsten J. (31 July 2014). "New combinations and names in Melaleuca (Myrtaceae)". Taxon. 63 (3): 665. doi:10.12705/633.38.
  3. ^ a b c Corrick, Margaret G.; Fuhrer, Bruce A. (2009). Wildflowers of southern Western Australia (3rd ed.). Kenthurst, N.S.W.: Rosenberg Publishing P/L. p. 115. ISBN 9781877058844. Retrieved 31 July 2015.
  4. ^ a b c d "Calothamnus oldfieldii". FloraBase. Retrieved 31 July 2015.
  5. ^ von Mueller, Ferdinand (1862). Fragmenta Phytographiae Australiae (Volume 3). Melbourne. p. 31. Retrieved 31 July 2015.
  6. ^ Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue. Perth: Wildflower Society of Western Australia. p. 351. ISBN 0646402439.